I'll let it go and get back to zapping spammers.
A never-ending task, sadly ... I've put blocks in place on a couple of big webhosting companies which were being used for spam (obviously, the only way a web server would be posting on here is if it's being abused for spam!) which seems to have helped a bit. The trouble is, these spammers tend to get control of a machine then use it to blast out tens of thousands of forum posts on all the forums they know about. A couple of times, I've had a notification of a new user registration and seen their IP already listed as an active mass-forum-spammer even before they posted here, which is nice to catch...