I noticed on the front page that there was a comment on an old article, so I went to see it, here. It looks like the work of a bot. The name "Nick" was hyperlinked to some sort of automotive site. I edited out both the link and the e-mail address, but left the comment (it was rather inoccuous, and editing was readily obvious while I didn't see the ability to delete until after I'd done the editing). Probably next time I would just delete the comment, but I thought I'd alert you to the possibility that there's a bot program out there that has figured out how to comment here.
I'll keep on it.
--M. J. Young