Abbreviated SoSa by many of its inhabitants. It's a great place to meet people who enjoy things on the internet, like pictures. Most of the users come from Imgur.com (an image hosting site). If you like cats, you're welcome. If you like dogs, you're welcome. If you like animals in general, you're welcome. Cat selfies are a must, people love that.
Well that was more about why you should join. The site's great. It's built very well and response times on issues are very fast on the owner's part. There are tons of cool features like group video chat, chat rooms (public and private), creating meetups with users, and there's even a mechanism that acts kind of like a singles finder! It's a great site, come check it out!