Well, the spambots finally pushed me too far. Rewrote the spam filter on the lastgoogle site to more aggressively purge spammy queries. Not the most sophisticated algorithm in the world and there may be a few false positives. But the success (or failure) of the script should be readily apparent on the
lastgoogle blog.
More information on lastgoogle development, including
the spam filter script itself, can be found at the
new lastgoogle wiki.