It amazes me how much trouble people put themselves into because of making information public. Don't you realize that anything you put on a social network is at least quasi-public? For the health of your online image, I recommend going through your entire profile, friends and photos every month or so. Not only are your friends checking out what you're doing, but also potential employers and schools! I'm not saying to take the fun out of social networking, but use some discretion. You wouldn't want a potential employer to find pictures of you sleeping at your desk, and you definitely wouldn't want your school to find a video of you playing a drinking game (especially if you're under 21). If you participate in shady activities (most of us probably do at least a little), at least limit access to it on Facebook.
I would be going crazy if I had kids these days. Have you read the horror stories about what kids have done to each others' image online? Just take 15 minutes per month, delete pictures that could get you a bad name, and remove friends that you don't know or no longer talk to. And don't feel bad about it! If someone notices that you removed them from FB and they're mad at you for doing so, then it was absolutely the right decision! (Stalk much?)
