Have you noticed the recent uptick in the comment spam levels aimed at Movable Type blogs?
Jay Allen notes the problem and has some suggestions for how to tackle it on his blog.
For those of you using Movable Type, you may have noticed quite a uptick in the last week of spam. This spammer (and yes, the signature points to just one) is wily enough to evade most of SpamLookup's default tests. He is not, however, invincible.
First, assuming you're using Movable Type 3.2 and SpamLookup, you can make your life a whole lot better if you go to Weblog » Settings » Plugins » SpamLookup -> Keyword Filters and put the following into your Keywords to Junk:
Probaly you should read this
Our spam problem stopped the second we implemented these. More info and a good comment thread on Jay's blog.