Has the end of free social networking arrived?

Ning Niche network

Niche networks for meaningful conversations

Back in April 2010 Harry McCracken of PC World reported in a post that NING would be changing the free social networks used by millions of people to be used as paid accounts. During that period I thought: I wonder how many Ning networks will convert to paid services, how many will move elsewhere, and how many will just go away?
Over two million account owners will have to decide what to do in the near future. Well we know that that Ning service did not go away and people were ready to pay to keep the networks they created vibrant.  “It’s dangerous to assume that free services will be around forever, at least as free services. Will more social network require a few for service in 2011?