and I'm certain I've seen one on slate.com
Is Facebook really so all consuming for these people who have to quit it publicly?
Personally I love FB. It's like auto-pilot for my social life. It reminds me about the birthdays about the people I only vaguely care about, leave them a one-line message on their wall and that's it until next year.
All the people who are really in my life I rarely interact with on FB but it's great for making lots of people think that lots of people care about them.
What's not to like?