Bookmark one of them and wait. For some reason, the comment spam bots tend to hit them. I suspect it's either clueless spam submissions that screw up, or it's

Bookmark one of them and wait. For some reason, the comment spam bots tend to hit them. I suspect it's either clueless spam submissions that screw up, or it's some funky magic in the backend. Either way, I have yet to see a real person do this.