Facebook is the top social networking site in the world. I've been a member of this site for about 2-3 years now, and although Facebook has it's share of bugs and development issues, it has earned it's place at the top of the list. They are constantly adding new features and phasing out the ones we aren't happy with. There's no charge for being able to utilize every feature they have. More uses for this social networking site are found all the time and many sites are finding that it benefits them to be connected to a site with like a billion members. Of all the features Facebook offers, my favorite is VoIP. They not only offer messaging and chat that can be forwarded to my cell phone, they have added video and voice calling to their growing list of features. I don't have to use a separate application to talk to my friends and family around the world, and it's free!