Yeah, someone else said that the other day on another discussion - we're seeing the bubble bursting for social media. The VC money is drying up, so these websites with massive bloat and overhead suddenly need to come up with new ways to generate cash. So they turn to what they "think" works - charge the visitors for the privilege to use their website without ever considering that maybe people will simply migrate and go elsewhere, as they always have.
Just like when most people left Myspace, then left digg, then left twitter, and left facebook, and left reddit. There's always stragglers that will keep the sites afloat. But they are a shell of the sites they once were.
Look at Facebook - back in 2005 it was an amazing site where all your friends were socially active and engaged. Now it's a ghost town - out of hundreds of friends and family, I only see a few posts from friends/family and a ton of ads and posts from groups I follow.