Google has what I think will be the Facebook Killer on the horizon.
it's called Google+. Watch a video on it by one of my friends online named Ty Moss, he does lots of tech reviews and specifically Apple stuff.
http://www.youtube.com/watch?v=vcIU-PW0ov0
It looks better than Facebook. I was invited by a friend to open a page during the beta version and it's MUCH better. you can make "circles" and categorize your friends, acquaintences(sp), co-workers, family, you can video chat, lots of stuff.
Check out the video, will you join Google+? will you abandon Facebook?
I just might.