There's plenty of information about me out there. My only concern is identify theft, but that's more likely to happen through someone stealing a large collection of personal data from a company I've given it to, rather than by piecing together my identity from bits and pieces scattered around the Intarsphere.
Hell, I was on national TV admitting I took drugs, and that was mentioned on a forum. After that, why bother hiding anything? I have secrets, sure, but they're secrets only because no-one has asked me about them yet