[exitwound]

Search for your last name. It looks through Facebook for people with the last name in your area first. Family are often the first hits. It knows your location, guesses your school, and your age gives your graduating year, and it uses that to suggest others. If you have a friend, it looks through their friends with similar activities, ages, locations etc. It also looks at your work history and cross references that with others who have worked in the same company etc. It's just a bunch of cross referencing. Facebook has no conscious hand in it. It's all a big database, that's it. The artificial intelligence is just that, artificial. You give up just as much info publically, but you just don't have as much access to it as easily. Why freak out over it?