One of those niches is Tumblr, which I still find very different in culture from any other social networks I ever been. Or at least my niche on Tumblr is like t

One of those niches is Tumblr, which I still find very different in culture from any other social networks I ever been. Or at least my niche on Tumblr is like that. Yes I do see "output-only" communities also there, but there's still enough room for the "real thing".