Abstract: The subject matter of this specification can be implemented in, among other things, a method that includes receiving a new message and providing instructions to a client device for collapsing at least one of one or more previously received messages when the number of messages reaches a number at which it is desirable to collapse the message thread. The method also includes providing instructions for appending a new message to the message thread. The method may also include instructions for providing one or more collapse or expand controls for managing message threads.

Abstract: Computer-implemented methods for generating and providing a post in a social activity stream by using a post framework and a content framework are provided. The post framework provides clear separation of shared content, the posting user's voice, social metadata, comment discussion, and interactive actions. The content framework includes a defined content body. The content body may include content, metadata and user interface control elements to be provided in a user post within a social activity stream. Systems and machine-readable media for providing a post in a social activity stream by using a post framework and/or a content framework are also provided.