What is conceivable is one macro tool popping up which would regroup microblogging, forum, video/streaming and image sharing, in one single login. With a single name. So far each tool is a different name.
I wonder who would do it. Maybe Valve? This would be a good move, they could offer a large platform, federating with any game publisher which would offer a point of entry (support, exchange, etc) to their customers with a single login. You create an account on Steam and you can post your support request to the instance of Paradox for example. Each participant would have control, independence and exchange.