We're all plagued by Junk Comments. Some of them are just the internet version of writing your name on the bus seat in marker pen. Some are a bit pathetic "My site's really good, I wud like u 2 visit it." Some are the equivalent of playground name calling. They just get deleted.
Then there are those that obviously trying to get you onto their commercial site, saying things like, "I so agree," or "That's a really interesting post." They get deleted with a sigh.
I had one that was simply a long list of hyperlinks to 'adult rated' sites. Deleted in annoyance.
I think I have just had the ultimate in self-defeating spam comments "Here's a tip, if you don't know what you're talking about, don't post online" left at not one, but two different posts.
Deleted in puzzlement. So, you want me to visit your site that is trying to sell me prescription drugs in a way that is illegal in the country of my Top Level Domain, and you insult me. (Vaguely, anyway...).
Very odd. And very unsophisticated!