I've been seeing some odd comment spam on one of my sites. Odd because there are no links posted. Just, "Wow, that's a really celevr way of thinking about it!" or similar. Note the typo. The messages change but they almost always seem to have a typo. I'm wondering if that may be on purpose, perhaps as a way of tracking successful comments or some such (like subtly and uniquely altering several copies of a classified document to pinpoint who a leaker was).
I've noticed that often one of the fields will be left empty, inluding the comment body. This suggests to me that this is a bot that's testing for honeypot fields.
Anyway, the baffling thing about these is that there are never any links posted. I can't figure out what the point of this would be. Any ideas?