I think Zanderman was referring to the state of the board this morning. It was completely plastered with spam threads. The fact is, I have to remove every spammer one by one, and I only have time to do it about once a week. We get about 1 new spambot registering on to the forums every 20 minutes or so. I can zap a bunch of them at a time so long as they haven't posted yet (I just prune the users that haven't posted). I have it set so that admins have to approve anyone new coming on to the forums now, so we'll see how that works out.
Was it now? I've seen that happen quite a few times already. It's frustrating for sure when it does happen. The registration authorization is a good idea. Now that I think about it, another possible solution could be what some forums are starting to do and that is to require registration not only being approved by an admin, but also requiring that the user use an email address which isn't a free email address (gmail, hotmail, etc). I personally, am not a fan of it, since all of my emails are free based, but it is an option for future registrants.
I'm getting quite a few registration requests, and while some are quite obvious in what they are (cheap boats for sale), some aren't as cut-and-dry. How are you able to tell?