Halo fanboys aren't the only creeps on Xbox Live: 27-year-old Edward Stout was convicted of seducing a 15-year-old girl over Xbox Live and then driving 30 hours non-stop to meet and have sex with her.
He was sentenced to 10 years in prison, but it's a pretty sobering reminder of why parents should pay attention to how their kids play games. The usual concern is violence in the games themselves and dumb kids blithely screaming "fag!" at each other, but there are obviously way worse things out there.
I know MySpace purges known sex offenders and many states require them to register all online identities, including Live gamertags, but I've never heard of any particular campaigns where Xbox Live went after them. [SF Gate via Max Console]