Fun site. I go on their to do the usual. Just be careful of so me apps on there. You usually can tell which ones look fishy. Be sure that you are on Facebook. Before you put in your log in and password. This is usually the reason why people get their accounts hacked!
Just like other social networking websites this requires carefull use.
Privacy is extremely poor, many applications and quizes that are actually a spyware and/or virus.
Can be good for a company promotion.
Everyone has to know that Facebook sells private datas to commercial societies. Moreover, you can't delete your account, only disable it; and once you've entered an information on your profile, it belongs to Facebook, even if you delete it.