I have now applied pretty much every decent spam/bot solution out there, so we shouldn't receive any at all now

.
My
other forum runs this setup as well, and hasn't had anything in over a year now since I installed it. Thanks to all the mods who were on the ball in removing the spam members.
As to why we've received more today than before, I believe it's just that I have been carrying out so much SEO (search engine optimisation) work!