I made that mistake. I invited my Boss and her Boss and almost all my colleagues on Facebook and Twitter. Most of them did not accept my invite, since they feel that hobnobbing with someone as junior as me is below their dignity. But some of them did - especially my Boss (I think she wants to keep tabs on what I do in my spare time). That was the beginning of the end of my Facebook and Twitter existence. I started being extra careful what I posted. I could crib and complain about work, I couldn’t network with potential employers or flirt openly. In short Facebook and Twitter ceased to be fun - they became mundane and lifeless. I can now only sit back and watch the newsfeed and see others having fun, but I am afraid to participate.

Moral of the story - Never invite your Boss on Facebook and Twitter.