Last night, a spammer tried to post comments to a variety of posts, from a variety of IP numbers. The spammer also tried to obfuscate his text by using HTML encoded entities for some of the text in the links (which were to a variety of sites for online gambling or pharmecuticals). None of them ever showed up here. They were all auto-moderated by WordPress. I was able to delete all 64 of the attempted spams from my moderation queue with just a few mouse clicks.