     CReplieeBucketActivity     : "comment"
     CFolloweeBucketActivity    : "follow"
     CLikeeBucketActivity       : "like"
-    CGroupJoineeBucketActivity : "member"
+    CGroupJoineeBucketActivity : "groupJoin"
+    CGroupLefteeBucketActivity : "groupLeft"
 
   actionPhraseMap = ->
-    comment : "commented on"
-    reply   : "replied to"
-    like    : "liked"
-    follow  : ""
-    share   : "shared"
-    commit  : "committed"
-    member  : "joined"
+    comment     : "commented on"
+    reply       : "replied to"
+    like        : "liked"
+    follow      : ""
+    share       : "shared"
+    commit      : "committed"
+    member      : "joined"
+    groupJoin   : "joined"
+    groupLeft   : "left"
 
   constructor:(options = {}, data)->
 

        height : 40
      origin   : group[0]

    @interactedGroups = new options.linkGroupClass 
      itemClass : GroupLinkView 
      group     : [@snapshot.anchor.data]

    @timeAgoView = new KDTimeAgoView {}, @getLatestTimeStamp @getData().dummy

        'CFolloweeBucketActivity'
        'CLikeeBucketActivity'
        'CGroupJoineeBucketActivity'
        'CNewMemberBucketActivity'
        'CGroupJoineeBucketActivity'
        'CGroupJoinerBucketActivity'
        'CGroupLefteeBucketActivity'
        'CGroupLefterBucketActivity'
      ]
    }, {
      limit: 8
