Exercise some good old-fashioned common sense and take the photos in such a way that you can't see faces. It's easy enough to do. Digital cameras allow you the luxury of taking shot after shot until you get it right. If your Web site has recognizable face shots, then take them down. Either that or make sure the photos are at least 10 years old.
Experts to students: Watch what you post Article in eSchool News about posting in MySpace.com. A must read for students and parents alike.