Have you heard about comment spamming in blogs? It happened to me. Nothing major, just a real annoyance. I was wondering why all these comments started coming in on posts I had made last year. Just real quick "I agree" stuff, but with a really strange URL listed. Obviously, some one was trying to get their rankings up on the search engines by plastering their URL all over comments. I did some Google searches on the URLS (I won't post them, 'cuz that's what they want) and see they are doing it all over.

So if you run a blog, check your comments for less-than-cleverly hidden spam messages in your comments. And delete them.