^ This! ^
I have FB but only put up on FB what you want public. Infact that goes for anywhere on the internet including email. EVERYTHING CAN be intercepted and read if people really want to.
Recently I tracked down someone I met for an hour on a saturday night simply by remembering some information she had told me (ie shes a student, lives in X area, studying X and her first name is X) I had no other info - no sirname, no actual address etc etc. In under an hour I tracked her down - we have no common friends or anything - essentially two complete strangers all bar a conversation on a saturday night.
Now I guess thankfully for her my want to track her down was purely for her benefit (I found some work for her) and nothing malicious but I'm sure if I was someone with malicious intentions I could've spent a little bit longer and got more personal information etc.
Now I did contact 3 people trying to track her down (obviously 2 weren't her) and obviously the way I contacted her and the fact that I had background information (ie I wasnt a "complete" stranger) from our conversation on saturday night so that made it easier because she was then obviously willing to repond to the email I sent. But I dont think it would be "too" hard to get this information about someone if you really wanted to.
Google yourself and find out whats online about you. I'm sure many of you would be supprised at some of the info thats online that you might have fogotten about
Think about this if someone knew your name, knew you were a home brewer and knew you lived in X I'm sure that they could find information on this site enough to at least get them leads to other places on the net that they might be able to get more info etc on you. Its not rocket science.
Sick of people bitching about google and facebook etc and privacy laws. Theres something 6.8billion people in the world what makes you think your interesting enough for google or facebook etc to really give a shit about you - fact is they dont! and the information they collect &/or share about you is information
YOU give them.