It seems like the trend of social media sites popping up constantly is slowing down a little bit, but I wonder if there are any social media sites you guys use other than the popular ones? I think Pinterest is the last I've picked up, and for a while, I've sworn off signing up with new ones because I just felt like I had too many sites to manage as it is. Nowadays, I have a little more time though, and I'd like to discover some new sites I could play with and maybe utilize for marketing. Anyone out there using any obscure social sites to market on?