I just received the following spam comment.

I like peoplewithblogs.com and category this very interesting.
Best Regards bachelor

They're getting smart by catching your attention and putting the domain of your blog in their comment. To the blogger who is just scanning the comments in moderation, seeing a link to their own site will make them think, "Hey, this guy mentioned my site name, so it must be legit." Hmph. Very clever, indeed. But- I didn't fall for it! The fact that the word "bachelor" was hyperlinked is what really tipped me off.