Eh. Easily foiled.

For those worried about this:

• Create a new user id, not at all related to anything you do. Random is good.
• If you have to give an email address, go to one of the public email sites, create a "throw away" account, use that.
• Do not use an "avatar" or picture to represent yourself (the link might lead back to you).
• Do not put ANY information in your user profile.
• Don't reveal information about yourself (location, job, interests, recent activities, etc).
• Don't post any photos, unless you can do so using an anonymous photo hosting site.

The truly paranoid should go to a public place with free wifi when posting (your IP address could be used to find the internet account you posted from).

Oh, and if you're on several sites like this, pick completely different names for each. I've seen too many people have the same account on multiple boards. Bad idea.