When we say personal details in a profile, we generally mean our name, maybe some stats on posting history, then anything else you choose to add. You have control. There's a lot of daft talk about people knowing your shoe size, marital history, etc. Have a look at my profile on TheSession, which you can only do if you're a logged-in member, by the way. Not much for MI5 to go on there. Anyone who reads my posts could track me down within minutes if they really wanted to. That's because my posts contain my real name and because I don't conceal my location and I'm in the telephone directory and the electoral register. So? I'm not bloody James Bond, you know. I'm simply talking about having the manners to have a consistent user name at the very least and a non-googlable real name. And the word "Guest" should be banned from the forum.