For a while now, I have been very apprehensive about what to put on Facebook. I've recently learned not to post when I am going on vacation, or accept unknown people as friends. I don't accept gifts, do quizzes, or play games. I just think that Facebook is extremely invasive. Each time you try to accept a gift, it asks you for authorization to pull your friend list. I always say no to the request. I was recently on MSNBC and they reported that Facebook and Twitter are now being used to target people for theft and robbery. For instance, let's say you got a new plasma television and you want your friends to know. Not so fast. If you have a multitude of friends that you don't know, you could be setting yourself up for theft. I personally make it a practice to try and be as evasive a possible on Facebook for that very reason. Don't put up pictures of your nice house and the nice things you've acquired over the years. That's asking for trouble. Also, don't accept anyone as a friend, unless there is a real connection. It's not how many friends you have, but the quality of that friendship. Who cares if you have 2,000 dormant friends on Facebook or Twitter - and what!
Where it gets a little sticky is when you are combining your business and personal information on Facebook or Twitter. In this instance, it's difficult to turn away friends, because they could be potential customers. To circumvent this problem, you could set up a group with your company name. That way, you can keep your business and personal life separate. I don't really subscribe to that yet, because sometimes your friends, are your clients, or they want to know what you're doing in the business world.
The most important thing is to be aware that whatever you place on a social networking site can be viewed and discovered by almost anyone. Having that fact in mind, you'll have to find a happy medium of information that you are willing to place on your social networking account.