diff --git a/server/lemmy_db/src/activity.rs b/server/lemmy_db/src/activity.rs
index 83f85ca1..557eb9e9 100644
--- a/server/lemmy_db/src/activity.rs
+++ b/server/lemmy_db/src/activity.rs
@@ -117,7 +117,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_862362".into(),
       bio: None,
       local: true,
       private_key: None,
diff --git a/server/lemmy_db/src/comment.rs b/server/lemmy_db/src/comment.rs
index acdddcc3..dc369c8b 100644
--- a/server/lemmy_db/src/comment.rs
+++ b/server/lemmy_db/src/comment.rs
@@ -233,7 +233,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_283687".into(),
       bio: None,
       local: true,
       private_key: None,
@@ -253,7 +253,7 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_928738972".into(),
       local: true,
       private_key: None,
       public_key: None,
diff --git a/server/lemmy_db/src/comment_view.rs b/server/lemmy_db/src/comment_view.rs
index 4af13c2d..7f99ba4a 100644
--- a/server/lemmy_db/src/comment_view.rs
+++ b/server/lemmy_db/src/comment_view.rs
@@ -498,7 +498,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_92873982".into(),
       bio: None,
       local: true,
       private_key: None,
@@ -518,7 +518,7 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_7625376".into(),
       local: true,
       private_key: None,
       public_key: None,
diff --git a/server/lemmy_db/src/community.rs b/server/lemmy_db/src/community.rs
index ef91eb84..e1f24391 100644
--- a/server/lemmy_db/src/community.rs
+++ b/server/lemmy_db/src/community.rs
@@ -258,7 +258,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_8266238".into(),
       bio: None,
       local: true,
       private_key: None,
@@ -278,7 +278,7 @@ mod tests {
       removed: None,
       deleted: None,
       updated: None,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_7625376".into(),
       local: true,
       private_key: None,
       public_key: None,
@@ -300,7 +300,7 @@ mod tests {
       deleted: false,
       published: inserted_community.published,
       updated: None,
-      actor_id: "http://fake.com".into(),
+      actor_id: inserted_community.actor_id.to_owned(),
       local: true,
       private_key: None,
       public_key: None,
diff --git a/server/lemmy_db/src/moderator.rs b/server/lemmy_db/src/moderator.rs
index f5d33d96..0992197b 100644
--- a/server/lemmy_db/src/moderator.rs
+++ b/server/lemmy_db/src/moderator.rs
@@ -470,7 +470,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_829398".into(),
       bio: None,
       local: true,
       private_key: None,
@@ -497,7 +497,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_82982738".into(),
       bio: None,
       local: true,
       private_key: None,
@@ -517,7 +517,7 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_283687".into(),
       local: true,
       private_key: None,
       public_key: None,
diff --git a/server/lemmy_db/src/password_reset_request.rs b/server/lemmy_db/src/password_reset_request.rs
index a2692add..2529ba67 100644
--- a/server/lemmy_db/src/password_reset_request.rs
+++ b/server/lemmy_db/src/password_reset_request.rs
@@ -105,7 +105,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_8292378".into(),
       bio: None,
       local: true,
       private_key: None,
diff --git a/server/lemmy_db/src/post.rs b/server/lemmy_db/src/post.rs
index 12cf927e..66e24773 100644
--- a/server/lemmy_db/src/post.rs
+++ b/server/lemmy_db/src/post.rs
@@ -279,7 +279,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_8292683678".into(),
       bio: None,
       local: true,
       private_key: None,
@@ -299,7 +299,7 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_8223262378".into(),
       local: true,
       private_key: None,
       public_key: None,
diff --git a/server/lemmy_db/src/post_view.rs b/server/lemmy_db/src/post_view.rs
index 3e9f8737..ffc8afeb 100644
--- a/server/lemmy_db/src/post_view.rs
+++ b/server/lemmy_db/src/post_view.rs
@@ -415,7 +415,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_8282738268".into(),
       bio: None,
       local: true,
       private_key: None,
@@ -435,7 +435,7 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_2763".into(),
       local: true,
       private_key: None,
       public_key: None,
diff --git a/server/lemmy_db/src/private_message.rs b/server/lemmy_db/src/private_message.rs
index 1c0b455f..3492be2f 100644
--- a/server/lemmy_db/src/private_message.rs
+++ b/server/lemmy_db/src/private_message.rs
@@ -113,7 +113,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_6723878".into(),
       bio: None,
       local: true,
       private_key: None,
@@ -140,7 +140,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_287263876".into(),
       bio: None,
       local: true,
       private_key: None,
diff --git a/server/lemmy_db/src/user.rs b/server/lemmy_db/src/user.rs
index 556fc1a7..718067f9 100644
--- a/server/lemmy_db/src/user.rs
+++ b/server/lemmy_db/src/user.rs
@@ -166,7 +166,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_9826382637".into(),
       bio: None,
       local: true,
       private_key: None,
@@ -195,7 +195,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: inserted_user.actor_id.to_owned(),
       bio: None,
       local: true,
       private_key: None,
diff --git a/server/lemmy_db/src/user_mention.rs b/server/lemmy_db/src/user_mention.rs
index 9f23f441..5dc899b2 100644
--- a/server/lemmy_db/src/user_mention.rs
+++ b/server/lemmy_db/src/user_mention.rs
@@ -86,7 +86,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_628763".into(),
       bio: None,
       local: true,
       private_key: None,
@@ -113,7 +113,7 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_927389278".into(),
       bio: None,
       local: true,
       private_key: None,
@@ -133,7 +133,7 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
-      actor_id: "http://fake.com".into(),
+      actor_id: "changeme_876238".into(),
       local: true,
       private_key: None,
       public_key: None,
diff --git a/server/migrations/2020-07-18-234519_add_unique_community_user_actor_ids/down.sql b/server/migrations/2020-07-18-234519_add_unique_community_user_actor_ids/down.sql
new file mode 100644
index 00000000..7a4f2e2f
--- /dev/null
+++ b/server/migrations/2020-07-18-234519_add_unique_community_user_actor_ids/down.sql
@@ -0,0 +1,20 @@
+
+alter table community alter column actor_id set not null;
+alter table community alter column actor_id set default 'http://fake.com';
+alter table user_ alter column actor_id set not null;
+alter table user_ alter column actor_id set default 'http://fake.com';
+
+drop function generate_unique_changeme;
+
+update community
+set actor_id = 'http://fake.com'
+where actor_id like 'changeme_%';
+
+update user_
+set actor_id = 'http://fake.com'
+where actor_id like 'changeme_%';
+
+drop index idx_user_lower_actor_id;
+create unique index idx_user_name_lower_actor_id on user_ (lower(name), lower(actor_id));
+
+drop index idx_community_lower_actor_id;
diff --git a/server/migrations/2020-07-18-234519_add_unique_community_user_actor_ids/up.sql b/server/migrations/2020-07-18-234519_add_unique_community_user_actor_ids/up.sql
new file mode 100644
index 00000000..e32ed5e0
--- /dev/null
+++ b/server/migrations/2020-07-18-234519_add_unique_community_user_actor_ids/up.sql
@@ -0,0 +1,50 @@
+-- Following this issue : https://github.com/LemmyNet/lemmy/issues/957
+
+-- Creating a unique changeme actor_id
+create or replace function generate_unique_changeme() 
+returns text language sql 
+as $$
+  select 'changeme_' || string_agg (substr('abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789', ceil (random() * 62)::integer, 1), '')
+  from generate_series(1, 20)
+$$;
+
+-- Need to delete the possible community and user dupes for ones that don't start with the fake one
+-- A few test inserts, to make sure this removes later dupes
+-- insert into community (name, title, category_id, creator_id) values ('testcom', 'another testcom', 1, 2);
+delete from community a using (
+  select min(id) as id, actor_id
+    from community 
+    group by actor_id having count(*) > 1
+) b
+where a.actor_id = b.actor_id 
+and a.id <> b.id;
+
+delete from user_ a using (
+  select min(id) as id, actor_id
+    from user_ 
+    group by actor_id having count(*) > 1
+) b
+where a.actor_id = b.actor_id 
+and a.id <> b.id;
+
+-- Replacing the current default on the columns, to the unique one
+update community 
+set actor_id = generate_unique_changeme()
+where actor_id = 'http://fake.com';
+
+update user_ 
+set actor_id = generate_unique_changeme()
+where actor_id = 'http://fake.com';
+
+-- Add the unique indexes
+alter table community alter column actor_id set not null;
+alter table community alter column actor_id set default generate_unique_changeme();
+
+alter table user_ alter column actor_id set not null;
+alter table user_ alter column actor_id set default generate_unique_changeme();
+
+-- Add lowercase uniqueness too
+drop index idx_user_name_lower_actor_id;
+create unique index idx_user_lower_actor_id on user_ (lower(actor_id));
+
+create unique index idx_community_lower_actor_id on community (lower(actor_id));
diff --git a/server/src/apub/activities.rs b/server/src/apub/activities.rs
index a436d30f..a14e6ec3 100644
--- a/server/src/apub/activities.rs
+++ b/server/src/apub/activities.rs
@@ -1,10 +1,14 @@
 use crate::{
   apub::{
-    community::do_announce, extensions::signatures::sign, insert_activity, is_apub_id_valid,
+    community::do_announce,
+    extensions::signatures::sign,
+    insert_activity,
+    is_apub_id_valid,
     ActorType,
   },
   request::retry_custom,
-  DbPool, LemmyError,
+  DbPool,
+  LemmyError,
 };
 use activitystreams_new::base::AnyBase;
 use actix_web::client::Client;
diff --git a/server/src/apub/comment.rs b/server/src/apub/comment.rs
index 2a084015..774abba6 100644
--- a/server/src/apub/comment.rs
+++ b/server/src/apub/comment.rs
@@ -1,16 +1,25 @@
 use crate::{
   apub::{
     activities::send_activity_to_community,
-    create_apub_response, create_apub_tombstone_response, create_tombstone, fetch_webfinger_url,
+    create_apub_response,
+    create_apub_tombstone_response,
+    create_tombstone,
+    fetch_webfinger_url,
     fetcher::{
-      get_or_fetch_and_insert_remote_comment, get_or_fetch_and_insert_remote_post,
+      get_or_fetch_and_insert_remote_comment,
+      get_or_fetch_and_insert_remote_post,
       get_or_fetch_and_upsert_remote_user,
     },
-    ActorType, ApubLikeableType, ApubObjectType, FromApub, ToApub,
+    ActorType,
+    ApubLikeableType,
+    ApubObjectType,
+    FromApub,
+    ToApub,
   },
   blocking,
   routes::DbPoolParam,
-  DbPool, LemmyError,
+  DbPool,
+  LemmyError,
 };
 use activitystreams_new::{
   activity::{Create, Delete, Dislike, Like, Remove, Undo, Update},
diff --git a/server/src/apub/community.rs b/server/src/apub/community.rs
index 0df2f3fd..f84e6508 100644
--- a/server/src/apub/community.rs
+++ b/server/src/apub/community.rs
@@ -1,13 +1,22 @@
 use crate::{
   apub::{
-    activities::send_activity, create_apub_response, create_apub_tombstone_response,
-    create_tombstone, extensions::group_extensions::GroupExtension,
-    fetcher::get_or_fetch_and_upsert_remote_user, get_shared_inbox, insert_activity, ActorType,
-    FromApub, GroupExt, ToApub,
+    activities::send_activity,
+    create_apub_response,
+    create_apub_tombstone_response,
+    create_tombstone,
+    extensions::group_extensions::GroupExtension,
+    fetcher::get_or_fetch_and_upsert_remote_user,
+    get_shared_inbox,
+    insert_activity,
+    ActorType,
+    FromApub,
+    GroupExt,
+    ToApub,
   },
   blocking,
   routes::DbPoolParam,
-  DbPool, LemmyError,
+  DbPool,
+  LemmyError,
 };
 use activitystreams_ext::Ext2;
 use activitystreams_new::{
diff --git a/server/src/apub/community_inbox.rs b/server/src/apub/community_inbox.rs
index 44a1c949..3b823674 100644
--- a/server/src/apub/community_inbox.rs
+++ b/server/src/apub/community_inbox.rs
@@ -2,7 +2,8 @@ use crate::{
   apub::{
     extensions::signatures::verify,
     fetcher::{get_or_fetch_and_upsert_remote_community, get_or_fetch_and_upsert_remote_user},
-    insert_activity, ActorType,
+    insert_activity,
+    ActorType,
   },
   blocking,
   routes::{ChatServerParam, DbPoolParam},
diff --git a/server/src/apub/fetcher.rs b/server/src/apub/fetcher.rs
index 8779486b..d224b7cd 100644
--- a/server/src/apub/fetcher.rs
+++ b/server/src/apub/fetcher.rs
@@ -4,7 +4,8 @@ use crate::{
   blocking,
   request::{retry, RecvError},
   routes::nodeinfo::{NodeInfo, NodeInfoWellKnown},
-  DbPool, LemmyError,
+  DbPool,
+  LemmyError,
 };
 use activitystreams_new::{base::BaseExt, object::Note, prelude::*};
 use actix_web::client::Client;
@@ -20,7 +21,9 @@ use lemmy_db::{
   post_view::PostView,
   user::{UserForm, User_},
   user_view::UserView,
-  Crud, Joinable, SearchType,
+  Crud,
+  Joinable,
+  SearchType,
 };
 use lemmy_utils::get_apub_protocol_string;
 use log::debug;
diff --git a/server/src/apub/mod.rs b/server/src/apub/mod.rs
index 3f61dc92..4e65d9e7 100644
--- a/server/src/apub/mod.rs
+++ b/server/src/apub/mod.rs
@@ -19,7 +19,8 @@ use crate::{
   blocking,
   request::{retry, RecvError},
   routes::webfinger::WebFingerResponse,
-  DbPool, LemmyError,
+  DbPool,
+  LemmyError,
 };
 use activitystreams_ext::{Ext1, Ext2};
 use activitystreams_new::{
diff --git a/server/src/apub/post.rs b/server/src/apub/post.rs
index 039afe86..dc4ae249 100644
--- a/server/src/apub/post.rs
+++ b/server/src/apub/post.rs
@@ -1,14 +1,22 @@
 use crate::{
   apub::{
     activities::send_activity_to_community,
-    create_apub_response, create_apub_tombstone_response, create_tombstone,
+    create_apub_response,
+    create_apub_tombstone_response,
+    create_tombstone,
     extensions::page_extension::PageExtension,
     fetcher::{get_or_fetch_and_upsert_remote_community, get_or_fetch_and_upsert_remote_user},
-    ActorType, ApubLikeableType, ApubObjectType, FromApub, PageExt, ToApub,
+    ActorType,
+    ApubLikeableType,
+    ApubObjectType,
+    FromApub,
+    PageExt,
+    ToApub,
   },
   blocking,
   routes::DbPoolParam,
-  DbPool, LemmyError,
+  DbPool,
+  LemmyError,
 };
 use activitystreams_ext::Ext1;
 use activitystreams_new::{
diff --git a/server/src/apub/private_message.rs b/server/src/apub/private_message.rs
index 17d5c09c..94cadeec 100644
--- a/server/src/apub/private_message.rs
+++ b/server/src/apub/private_message.rs
@@ -1,9 +1,16 @@
 use crate::{
   apub::{
-    activities::send_activity, create_tombstone, fetcher::get_or_fetch_and_upsert_remote_user,
-    insert_activity, ApubObjectType, FromApub, ToApub,
+    activities::send_activity,
+    create_tombstone,
+    fetcher::get_or_fetch_and_upsert_remote_user,
+    insert_activity,
+    ApubObjectType,
+    FromApub,
+    ToApub,
   },
-  blocking, DbPool, LemmyError,
+  blocking,
+  DbPool,
+  LemmyError,
 };
 use activitystreams_new::{
   activity::{Create, Delete, Undo, Update},
diff --git a/server/src/apub/shared_inbox.rs b/server/src/apub/shared_inbox.rs
index 708cc0b2..8d6b255d 100644
--- a/server/src/apub/shared_inbox.rs
+++ b/server/src/apub/shared_inbox.rs
@@ -8,10 +8,16 @@ use crate::{
     community::do_announce,
     extensions::signatures::verify,
     fetcher::{
-      get_or_fetch_and_insert_remote_comment, get_or_fetch_and_insert_remote_post,
-      get_or_fetch_and_upsert_remote_community, get_or_fetch_and_upsert_remote_user,
+      get_or_fetch_and_insert_remote_comment,
+      get_or_fetch_and_insert_remote_post,
+      get_or_fetch_and_upsert_remote_community,
+      get_or_fetch_and_upsert_remote_user,
     },
-    insert_activity, ActorType, FromApub, GroupExt, PageExt,
+    insert_activity,
+    ActorType,
+    FromApub,
+    GroupExt,
+    PageExt,
   },
   blocking,
   routes::{ChatServerParam, DbPoolParam},
@@ -19,7 +25,8 @@ use crate::{
     server::{SendComment, SendCommunityRoomMessage, SendPost},
     UserOperation,
   },
-  DbPool, LemmyError,
+  DbPool,
+  LemmyError,
 };
 use activitystreams_new::{
   activity::{ActorAndObjectRef, Announce, Create, Delete, Dislike, Like, Remove, Undo, Update},
@@ -38,7 +45,8 @@ use lemmy_db::{
   post::{Post, PostForm, PostLike, PostLikeForm},
   post_view::PostView,
   user::User_,
-  Crud, Likeable,
+  Crud,
+  Likeable,
 };
 use lemmy_utils::scrape_text_for_mentions;
 use log::debug;
diff --git a/server/src/apub/user.rs b/server/src/apub/user.rs
index 4ebfe77b..2a98670c 100644
--- a/server/src/apub/user.rs
+++ b/server/src/apub/user.rs
@@ -1,12 +1,18 @@
 use crate::{
   api::claims::Claims,
   apub::{
-    activities::send_activity, create_apub_response, insert_activity, ActorType, FromApub,
-    PersonExt, ToApub,
+    activities::send_activity,
+    create_apub_response,
+    insert_activity,
+    ActorType,
+    FromApub,
+    PersonExt,
+    ToApub,
   },
   blocking,
   routes::DbPoolParam,
-  DbPool, LemmyError,
+  DbPool,
+  LemmyError,
 };
 use activitystreams_ext::Ext1;
 use activitystreams_new::{
diff --git a/server/src/apub/user_inbox.rs b/server/src/apub/user_inbox.rs
index 73916ee2..7b589b28 100644
--- a/server/src/apub/user_inbox.rs
+++ b/server/src/apub/user_inbox.rs
@@ -3,12 +3,14 @@ use crate::{
   apub::{
     extensions::signatures::verify,
     fetcher::{get_or_fetch_and_upsert_remote_community, get_or_fetch_and_upsert_remote_user},
-    insert_activity, FromApub,
+    insert_activity,
+    FromApub,
   },
   blocking,
   routes::{ChatServerParam, DbPoolParam},
   websocket::{server::SendUserRoomMessage, UserOperation},
-  DbPool, LemmyError,
+  DbPool,
+  LemmyError,
 };
 use activitystreams_new::{
   activity::{Accept, Create, Delete, Undo, Update},
@@ -22,7 +24,8 @@ use lemmy_db::{
   private_message::{PrivateMessage, PrivateMessageForm},
   private_message_view::PrivateMessageView,
   user::User_,
-  Crud, Followable,
+  Crud,
+  Followable,
 };
 use log::debug;
 use serde::Deserialize;
diff --git a/server/src/code_migrations.rs b/server/src/code_migrations.rs
index b28e120a..7c85fefc 100644
--- a/server/src/code_migrations.rs
+++ b/server/src/code_migrations.rs
@@ -30,7 +30,7 @@ fn user_updates_2020_04_02(conn: &PgConnection) -> Result<(), LemmyError> {
 
   // Update the actor_id, private_key, and public_key, last_refreshed_at
   let incorrect_users = user_
-    .filter(actor_id.eq("http://fake.com"))
+    .filter(actor_id.like("changeme_%"))
     .filter(local.eq(true))
     .load::<User_>(conn)?;
 
@@ -81,7 +81,7 @@ fn community_updates_2020_04_02(conn: &PgConnection) -> Result<(), LemmyError> {
 
   // Update the actor_id, private_key, and public_key, last_refreshed_at
   let incorrect_communities = community
-    .filter(actor_id.eq("http://fake.com"))
+    .filter(actor_id.like("changeme_%"))
     .filter(local.eq(true))
     .load::<Community>(conn)?;
 
diff --git a/ui/src/components/post-form.tsx b/ui/src/components/post-form.tsx
index f94f902f..6656ef84 100644
--- a/ui/src/components/post-form.tsx
+++ b/ui/src/components/post-form.tsx
@@ -151,7 +151,7 @@ export class PostForm extends Component<PostFormProps, PostFormState> {
 
   componentWillUnmount() {
     this.subscription.unsubscribe();
-    this.choices && this.choices.destroy();
+    /* this.choices && this.choices.destroy(); */
     window.onbeforeunload = null;
   }