I agree Pierre, thanks Richard and Gordon, (and I think others?).

Yeah, it's mostly links to porn sites and garbage in Russian, predominately being posted in the early hours. So when I refresh my connection while drinking my first coffee of the day I see them and kill them then. The site does have a blocker to prevent someone registering without a valid email address and a couple of other hoops for them to jump through, but still some of them get through. If you look at the memberlist, you'll see an awful lot of registered members that have never posted anything. Some may be genuine and they are just a bit shy, but the ones with user names that don't seem like something a normal person would use, are invariably spammers that haven't posted anything yet. Gordon has a bit of a clearout every so often and deletes a few too.