diff --git a/Changelog.md b/Changelog.md
index 465547322..55a5dd4e5 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -10,6 +10,7 @@
 * Disable auto follow back on aspect deletion [#5846](https://github.com/diaspora/diaspora/pull/5846)
 * Fix only sharing flag for contacts that are receiving [#5848](https://github.com/diaspora/diaspora/pull/5848)
 * Return 406 when requesting a JSON representation of people/:guid/contacts [#5849](https://github.com/diaspora/diaspora/pull/5849)
+* Destroy Participation when removing interactions with a post [#5852](https://github.com/diaspora/diaspora/pull/5852)
 * Hide manage services link in the publisher on certain pages [#5854](https://github.com/diaspora/diaspora/pull/5854)
 * Fix notification mails for limited posts [#5877](https://github.com/diaspora/diaspora/pull/5877)
 * Fix medium and small avatar URLs when using Camo [#5883](https://github.com/diaspora/diaspora/pull/5883)
diff --git a/app/models/comment.rb b/app/models/comment.rb
index aa86daedb..f6cd6f353 100644
--- a/app/models/comment.rb
+++ b/app/models/comment.rb
@@ -47,6 +47,8 @@ class Comment < ActiveRecord::Base
 
   after_destroy do
     self.parent.update_comments_counter
+    participation = author.participations.where(target_id: post.id).first
+    participation.unparticipate! if participation.present?
   end
 
   def diaspora_handle
diff --git a/app/models/like.rb b/app/models/like.rb
index 530fa2aa5..946c1d2ba 100644
--- a/app/models/like.rb
+++ b/app/models/like.rb
@@ -19,6 +19,8 @@ class Like < Federated::Relayable
 
   after_destroy do
     self.parent.update_likes_counter
+    participation = author.participations.where(target_id: target.id).first
+    participation.unparticipate! if participation.present?
   end
 
   xml_attr :positive
diff --git a/app/models/participation.rb b/app/models/participation.rb
index b36083428..7a1f0d180 100644
--- a/app/models/participation.rb
+++ b/app/models/participation.rb
@@ -9,6 +9,14 @@ class Participation < Federated::Relayable
     end
   end
 
+  def unparticipate!
+    if count == 1
+      destroy
+    else
+      update!(count: count.pred)
+    end
+  end
+
   # NOTE API V1 to be extracted
   acts_as_api
   api_accessible :backbone do |t|
diff --git a/app/models/user.rb b/app/models/user.rb
index de6cc79df..b318465a2 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -377,10 +377,10 @@ class User < ActiveRecord::Base
       retraction = Retraction.for(target)
     end
 
-   if target.is_a?(Post)
-     opts[:additional_subscribers] = target.resharers
-     opts[:services] = self.services
-   end
+    if target.is_a?(Post)
+      opts[:additional_subscribers] = target.resharers
+      opts[:services] = services
+    end
 
     mailman = Postzord::Dispatcher.build(self, retraction, opts)
     mailman.post
diff --git a/app/models/user/social_actions.rb b/app/models/user/social_actions.rb
index ccc30b484..2b3ff4a4a 100644
--- a/app/models/user/social_actions.rb
+++ b/app/models/user/social_actions.rb
@@ -1,6 +1,6 @@
 module User::SocialActions
   def comment!(target, text, opts={})
-    find_or_create_participation!(target)
+    update_or_create_participation!(target)
     Comment::Generator.new(self, target, text).create!(opts)
   end
 
@@ -9,17 +9,17 @@ module User::SocialActions
   end
 
   def like!(target, opts={})
-    find_or_create_participation!(target)
+    update_or_create_participation!(target)
     Like::Generator.new(self, target).create!(opts)
   end
 
   def participate_in_poll!(target, answer, opts={})
-    find_or_create_participation!(target)
+    update_or_create_participation!(target)
     PollParticipation::Generator.new(self, target, answer).create!(opts)
   end
 
   def reshare!(target, opts={})
-    find_or_create_participation!(target)
+    update_or_create_participation!(target)
     reshare = build_post(:reshare, :root_guid => target.guid)
     reshare.save!
     Postzord::Dispatcher.defer_build_and_post(self, reshare)
@@ -48,7 +48,12 @@ module User::SocialActions
     )
   end
 
-  def find_or_create_participation!(target)
-    participations.where(:target_id => target).first || participate!(target)
+  def update_or_create_participation!(target)
+    participation = participations.where(target_id: target).first
+    if participation.present?
+      participation.update!(count: participation.count.next)
+    else
+      participate!(target)
+    end
   end
 end
diff --git a/db/migrate/20150404193023_participation_counter.rb b/db/migrate/20150404193023_participation_counter.rb
new file mode 100644
index 000000000..a13d075b8
--- /dev/null
+++ b/db/migrate/20150404193023_participation_counter.rb
@@ -0,0 +1,29 @@
+class ParticipationCounter < ActiveRecord::Migration
+  def up
+    add_column :participations, :count, :int, null: false, default: 1
+
+    posts_count = Post.select("COUNT(posts.id)")
+                  .where("posts.id = participations.target_id")
+                  .where("posts.author_id = participations.author_id")
+                  .to_sql
+    likes_count = Like.select("COUNT(likes.id)")
+                  .where("likes.target_id = participations.target_id")
+                  .where("likes.author_id = participations.author_id")
+                  .to_sql
+    comments_count = Comment.select("COUNT(comments.id)")
+                     .where("comments.commentable_id = participations.target_id")
+                     .where("comments.author_id = participations.author_id")
+                     .to_sql
+    polls_count = PollParticipation.select("COUNT(*)")
+                  .where("poll_participations.author_id = participations.author_id")
+                  .joins(:poll)
+                  .where("polls.status_message_id = participations.target_id")
+                  .to_sql
+    Participation.update_all("count = (#{posts_count}) + (#{likes_count}) + (#{comments_count}) + (#{polls_count})")
+    Participation.where(count: 0).delete_all
+  end
+
+  def down
+    remove_column :participations, :count
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 07f4db16c..40ffa940f 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150403212139) do
+ActiveRecord::Schema.define(version: 20150404193023) do
 
   create_table "account_deletions", force: :cascade do |t|
     t.string   "diaspora_handle", limit: 255
@@ -254,12 +254,13 @@ ActiveRecord::Schema.define(version: 20150403212139) do
   create_table "participations", force: :cascade do |t|
     t.string   "guid",                    limit: 255
     t.integer  "target_id",               limit: 4
-    t.string   "target_type",             limit: 60,    null: false
+    t.string   "target_type",             limit: 60,                null: false
     t.integer  "author_id",               limit: 4
     t.text     "author_signature",        limit: 65535
     t.text     "parent_author_signature", limit: 65535
-    t.datetime "created_at",                            null: false
-    t.datetime "updated_at",                            null: false
+    t.datetime "created_at",                                        null: false
+    t.datetime "updated_at",                                        null: false
+    t.integer  "count",                   limit: 4,     default: 1, null: false
   end
 
   add_index "participations", ["guid"], name: "index_participations_on_guid", length: {"guid"=>191}, using: :btree
diff --git a/features/desktop/activity_stream.feature b/features/desktop/activity_stream.feature
new file mode 100644
index 000000000..81d0d72f8
--- /dev/null
+++ b/features/desktop/activity_stream.feature
@@ -0,0 +1,104 @@
+@javascript
+Feature: The activity stream
+  Background:
+    Given following users exist:
+      | username    | email             |
+      | Bob Jones   | bob@bob.bob       |
+      | Alice Smith | alice@alice.alice |
+    And a user with email "bob@bob.bob" is connected with "alice@alice.alice"
+    When "alice@alice.alice" has posted a status message with a photo
+
+  Scenario: Sorting
+    When I sign in as "bob@bob.bob"
+
+    Given I expand the publisher
+    When I write the status message "A- I like turtles"
+    And I submit the publisher
+    
+    Given I expand the publisher
+    When I write the status message "B- barack obama is your new bicycle"
+    And I submit the publisher
+
+    Given I expand the publisher
+    When I write the status message "C- barack obama is a square"
+    And I submit the publisher
+
+    When I go to the activity stream page
+    Then "C- barack obama is a square" should be post 1
+    And "B- barack obama is your new bicycle" should be post 2
+    And "A- I like turtles" should be post 3
+
+    When I like the post "A- I like turtles" in the stream
+    And I comment "Sassy sawfish" on "C- barack obama is a square"
+    And I like the post "B- barack obama is your new bicycle" in the stream
+    
+    When I go to the activity stream page
+    Then "B- barack obama is your new bicycle" should be post 1
+    And "C- barack obama is a square" should be post 2
+    And "A- I like turtles" should be post 3
+
+  Scenario: delete a comment
+    When I sign in as "bob@bob.bob"
+    And I am on "alice@alice.alice"'s page
+    Then I should see "Look at this dog"
+    When I focus the comment field
+    And I fill in the following:
+        | text            | is that a poodle?    |
+    And I press "Comment"
+
+    When I go to the activity stream page
+    Then I should see "Look at this dog"
+    And I should see "is that a poodle?"
+
+    When I am on "alice@alice.alice"'s page
+    And I click to delete the first comment
+    And I confirm the alert
+
+    And I go to the activity stream page
+    Then I should not see "Look at this dog"
+
+  Scenario: unliking a post
+    When I sign in as "bob@bob.bob"
+    And I am on "alice@alice.alice"'s page
+    Then I should see "Look at this dog"
+
+    When I like the post "Look at this dog" in the stream
+    And I go to the activity stream page
+    Then I should see "Look at this dog"
+
+    When I am on "alice@alice.alice"'s page
+    And I unlike the post "Look at this dog" in the stream
+    And I go to the activity stream page
+    Then I should not see "Look at this dog"
+
+  Scenario: multiple participations
+    When I sign in as "bob@bob.bob"
+    And I am on "alice@alice.alice"'s page
+    Then I should see "Look at this dog"
+
+    When I like the post "Look at this dog" in the stream
+    And I go to the activity stream page
+    Then I should see "Look at this dog"
+
+    When I am on "alice@alice.alice"'s page
+    Then I should see "Look at this dog"
+
+    When I focus the comment field
+    And I fill in the following:
+        | text            | is that a poodle?    |
+    And I press "Comment"
+
+    And I go to the activity stream page
+    Then I should see "Look at this dog"
+
+    When I am on "alice@alice.alice"'s page
+    And I unlike the post "Look at this dog" in the stream
+    And I go to the activity stream page
+    Then I should see "Look at this dog"
+
+    When I am on "alice@alice.alice"'s page
+    And I click to delete the first comment
+    And I confirm the alert
+
+    And I go to the activity stream page
+    Then I should not see "Look at this dog"
diff --git a/features/step_definitions/stream_steps.rb b/features/step_definitions/stream_steps.rb
index 901f4da3d..9e38191e5 100644
--- a/features/step_definitions/stream_steps.rb
+++ b/features/step_definitions/stream_steps.rb
@@ -2,6 +2,10 @@ When /^I (?:like|unlike) the post "([^"]*)" in the stream$/ do |post_text|
   like_stream_post(post_text)
 end
 
+Then /^I should see an image in the publisher$/ do
+  photo_in_publisher.should be_present
+end
+
 Then /^"([^"]*)" should be post (\d+)$/ do |post_text, position|
   stream_element_numbers_content(position).should have_content(post_text)
 end
diff --git a/spec/controllers/status_messages_controller_spec.rb b/spec/controllers/status_messages_controller_spec.rb
index 24b8787b8..5fc8ea7ea 100644
--- a/spec/controllers/status_messages_controller_spec.rb
+++ b/spec/controllers/status_messages_controller_spec.rb
@@ -158,6 +158,13 @@ describe StatusMessagesController, :type => :controller do
 #      response.body.should include('Status message requires a message or at least one photo')
 #    end
 
+    it "has one participation" do
+      post :create, status_message_hash
+      new_message = StatusMessage.find_by_text(status_message_hash[:status_message][:text])
+      expect(new_message.participations.count).to eq(1)
+      expect(new_message.participations.first.count).to eq(1)
+    end
+
     context 'with photos' do
       before do
         @photo1 = alice.build_post(:photo, :pending => true, :user_file=> File.open(photo_fixture_name), :to => @aspect1.id)
diff --git a/spec/models/comment_spec.rb b/spec/models/comment_spec.rb
index 2e2a91205..33dc00e6f 100644
--- a/spec/models/comment_spec.rb
+++ b/spec/models/comment_spec.rb
@@ -11,6 +11,23 @@ describe Comment, :type => :model do
     @status = bob.post(:status_message, :text => "hello", :to => bob.aspects.first.id)
   end
 
+  describe "#destroy" do
+    before do
+      @comment = alice.comment!(@status, "why so formal?")
+    end
+
+    it "should delete a participation" do
+      expect { @comment.destroy }.to change { Participation.count }.by(-1)
+    end
+
+    it "should decrease count participation" do
+      alice.comment!(@status, "Are you there?")
+      @comment.destroy
+      participations = Participation.where(target_id: @comment.commentable_id, author_id: @comment.author_id)
+      expect(participations.first.count).to eq(1)
+    end
+  end
+
   describe 'comment#notification_type' do
     let (:comment) { alice.comment!(@status, "why so formal?") }
 
@@ -60,6 +77,12 @@ describe Comment, :type => :model do
         alice.comment!(@status, 'hello')
       }.to change { Comment.count }.by(1)
     end
+
+    it "should create a participation" do
+      comment = bob.comment!(@status, "sup dog")
+      participations = Participation.where(target_id: comment.commentable_id, author_id: comment.author_id)
+      expect(participations.count).to eq(1)
+    end
   end
 
   describe 'counter cache' do
diff --git a/spec/models/like_spec.rb b/spec/models/like_spec.rb
index 11532bff6..9015d09d3 100644
--- a/spec/models/like_spec.rb
+++ b/spec/models/like_spec.rb
@@ -14,6 +14,23 @@ describe Like, :type => :model do
     expect(FactoryGirl.build(:like)).to be_valid
   end
 
+  describe "#destroy" do
+    before do
+      @like = alice.like!(@status)
+    end
+
+    it "should delete a participation" do
+      expect { @like.destroy }.to change { Participation.count }.by(-1)
+    end
+
+    it "should decrease count participation" do
+      alice.comment!(@status, "Are you there?")
+      @like.destroy
+      participations = Participation.where(target_id: @like.target_id, author_id: @like.author_id)
+      expect(participations.first.count).to eq(1)
+    end
+  end
+
   describe '#notification_type' do
     before do
       @like = alice.like!(@status)
diff --git a/spec/models/participation_spec.rb b/spec/models/participation_spec.rb
index 658c0cc8e..5c681185d 100644
--- a/spec/models/participation_spec.rb
+++ b/spec/models/participation_spec.rb
@@ -20,4 +20,32 @@ describe Participation, :type => :model do
 
     it_should_behave_like 'it is relayable'
   end
+
+  describe "#unparticipate" do
+    before do
+      @status = bob.post(:status_message, text: "hello", to: bob.aspects.first.id)
+      @like = alice.like!(@status)
+    end
+
+    it "retract participation" do
+      @like.author.participations.first.unparticipate!
+      participations = Participation.where(target_id: @like.target_id, author_id: @like.author_id)
+      expect(participations.count).to eq(0)
+    end
+
+    it "retract one of multiple participations" do
+      comment = alice.comment!(@status, "bro")
+      comment.author.participations.first.unparticipate!
+      participations = Participation.where(target_id: @like.target_id, author_id: @like.author_id)
+      expect(participations.count).to eq(1)
+      expect(participations.first.count).to eq(1)
+    end
+
+    it "retract all of multiple participations" do
+      alice.comment!(@status, "bro")
+      alice.participations.first.unparticipate!
+      alice.participations.first.unparticipate!
+      expect(Participation.where(target_id: @like.target_id, author_id: @like.author_id).count).to eq(0)
+    end
+  end
 end
diff --git a/spec/models/user/social_actions_spec.rb b/spec/models/user/social_actions_spec.rb
index 74a67608b..ed3041b0f 100644
--- a/spec/models/user/social_actions_spec.rb
+++ b/spec/models/user/social_actions_spec.rb
@@ -11,9 +11,10 @@ describe User::SocialActions, :type => :model do
       expect(alice.comment!(@status, "unicorn_mountain").text).to eq("unicorn_mountain")
     end
 
-    it "creates a partcipation" do
+    it "creates a participation" do
       expect{ alice.comment!(@status, "bro") }.to change(Participation, :count).by(1)
       expect(alice.participations.last.target).to eq(@status)
+      expect(alice.participations.last.count).to eq(1)
     end
 
     it "creates the comment" do
@@ -28,7 +29,7 @@ describe User::SocialActions, :type => :model do
   end
 
   describe 'User#like!' do
-    it "creates a partcipation" do
+    it "creates a participation" do
       expect{ alice.like!(@status) }.to change(Participation, :count).by(1)
       expect(alice.participations.last.target).to eq(@status)
     end
@@ -51,7 +52,7 @@ describe User::SocialActions, :type => :model do
       @status = bob.post(:status_message, :text => "hello", :to => @bobs_aspect.id)
     end
 
-    it "creates a partcipation" do
+    it "creates a participation" do
       expect{ alice.like!(@status) }.to change(Participation, :count).by(1)
     end
 
@@ -110,4 +111,18 @@ describe User::SocialActions, :type => :model do
       expect(alice.participate_in_poll!(@status, @answer).poll_answer).to eq(@answer)
     end
   end
-end
\ No newline at end of file
+
+  describe "many actions" do
+    it "two coments" do
+      alice.comment!(@status, "bro...")
+      alice.comment!(@status, "...ther")
+      expect(alice.participations.last.count).to eq(2)
+    end
+
+    it "like and comment" do
+      alice.comment!(@status, "bro...")
+      alice.like!(@status)
+      expect(alice.participations.last.count).to eq(2)
+    end
+  end
+end