I Apologize in Advance

I do not like to moderate comments posted because I want people to be free to speak as they want. But twice now some spammer has posted a comment that is nothing more than an advertisement for his site, complete with description and link to the site where he is selling a seven book series of books. I have turned on security features in this blog to make sure auto spam doesn't get posted and advertisers won't get posted. I will not, however, change or deny comments that disagree with me, insult me, or do anything besides advertise. In other words, real opinions and comments will not be moderated. I just don't want an advertisement comment on every post about creationism or evolution.