There is new social networking site named Zurker which has the potential to replace Facebook in the Future. Right now the site is in Beta state and u can register only by getting an invitation. If your interested and want to join here's an invitation for you - http://www.zurker.ph/i-295387-qsddgawotw (copy the whole link)
The best part about this site is unlike FACEBOOK which is run by Corporates, Zurker shares the profit with it's users and the sooner you join the better as this stake offer is valid for 1st million users only!!! It’s like a free investment without any charge so if you are interested then you can at least make an account, it's simple and easy.