I bailed on FB months ago. I've lost touch with a few people, but frankly all I have to do is dial the phone or send an email. What can I say, I've gotten lazy and my real world persoanl life keeps intruding. I definitely need to get in touch with some people and apologize for falling of the map.
In the beginning, there were emails.
Then came MySpace.
Following that was FaceBook.
Now it's Twitter
You'll notice each trend requires less typing and physical effort on the part of the user.