Some of my Facebook friends are sending messages back and forth, warning each other that Facebook Places will know where you are if you don't block them. Oh, nooo! That's terrible! Why would Facebook do that?
Well, let's see. Facebook spends lots of money to create a venue where we can all talk to each other and play games and have fun, right? And they just do that because they like us, right? Ummm, no.
Actually they want to know who you are and what things you like. And who your friends are and what they like. And where you all are. So that maybe if you are in the midwest and like football and drink Coke, they can tell the Pepsi Cola Company that maybe they should advertise on a midwest football game or something.
If you don't want Facebook to know stuff about you, don't use Facebook, Folks. You don't have to use it, life as we know it will still go on if you don't. If you use it, then deal with the fact that they will know stuff about you, probably much more than you realize that they know. That's the way it is.