Abstract: Various embodiments provide an ability for users to locate relevant multimedia building blocks for use in adding to posts in a manner which robustly adds to a particular conversation. A thread of conversation can be created across many posts and times. The notion of textual of replies is extended by allowing a multimedia conversation across a series of posts. Multimedia conversation lineages can be tracked and visualized across a series of posts, thus allowing for a non-linear tree of connections among related posts. In addition, an integrated social search engine can be utilized to provide for a shared context for constructing derivative posts.