In just 14 days, my Movable Type trackback script, mt-tb.cgi, has generated 500MB of traffic. Thank you, idiot trackback spammers!
Since we don’t really use this feature (I think), I’ve disabled this script and added the following rewrite rule to my htaccess:
RewriteRule ^weblogs/mt-tb.cgi - [F]<br />
This way the spam scripts get a 403 without being handled by the wiki.