one idea we'd been tossing around was to have custom stream…

one idea we'd been tossing around was to have custom streams that you could use kind of like twitter lists. so "following" someone would just add them into your following stream and when you selected that stream you'd only see posts from people you follow. ideally that'd be totally customizable so you could do like you were suggesting and make a stream that just showed certain memes or certain people's posts (or combinations of the two)