Yes, I know that whatever you're selling is great. Yes, I'm sure your anti-spam software is the best anti-spam software around. Yes, I understand that taking the time to read the post you're commenting on gives you less time to make money.
However, I have something to tell you all. If it looks like a spam comment, I delete it. I don't care if it has links or not; If you sound like a spammer to me, your comment is going to be sent to the happy spam filled blog in the sky. Now go bother some other hapless blogger.
Go away! Now!
(Sorry, real commenters, I just needed to get that out of my system. Even if the spammers never read it, writing that really made me feel better)