These so called 'SEO' people (spammers) have been hitting the forum hard lately, so I've had to up the requirements to join. It won't stop them, but will slow them a little. The most important thing is to stay diligent. If anyone wants to volunteer to help moderate (ONLY in the form of removing spam), then let me know. Many thanks to our existing moderators, who often catch the spam before I do.
I noticed that same too on my site. I just checked my "oldsite" logs and in 30hours over 226(blocked) spam messages :-0