Precautions while using Facebook
Do not place your personal information on your Facebook profile
As your residential address, your phone number, your cell phone number, your date of birth will all become very public information instantly and it will come back to haunt you in many ways. Check your profile constantly to ensure that you are not displaying personal information. The risk of identity theft or being tracked down by others is too great. If your friend really needs your contact information, then have them give you a call or send a private email outside of Facebook. Nothing is scarier than your ex boyfriend or ex girlfriend calling you out of the blue or finding out that a new credit card was taken out in your name on the other side of the country by an ex con.