We have one main social wall/feed. We also have several topic specific social walls... lets call them what they are "discussion forums" in our app. It would be great to be able to select one social wall as our prime wall and be able to connect the other social walls to that prime social wall so that posts in the sub feeds automatically post to the general feed.
This way a great topic can intrigue users who may never go into a specific topic feed easy ability to click on the post and see it in the topic feed and possibly join the conversation that they may not have even known existed.