I’ve just removed all of the trackback pings that had previously been sent to my site. Most of them were junk, but a few were useful, however there were something like 12,000 junk pings in the database that I didn’t have time to deal with.
Now that there’s some level of spam filtering for them, I’m going to re-enable trackbacks on my blog, but spammers take heed: there are terms and conditions here; if you blindly post trackback pings to this site, you could end up owing me thousands of dollars, and if the amount gets high enough, I’m going to be quite tempted to try my luck in court (particularly if I get sufficient backing from the blogging community).