Some related posts from Technorati and Google.

 [Sixapart.com] Six Apart Guide to Combatting Comment Spam: Jay Allen's MT-Blacklist plugin for Movable Type provides content-filtering against a list of items that you can maintain (and a list that you can update automatically from a central list maintained at the Comment Spam Clearinghouse). MT-Blacklist offers numerous features in addition to its namesake blacklisting feature, such as blocking duplicated submissions, forcing moderation on older posts, limiting the number of URLs within the content of a single comment (spammers often attempt to send comments containing dozens or even hundreds of URLs;

 [Kalsey.com] Comment Spam Manifesto :: Adam Kalsey: Hosting a public Web forum or Usenet server does not give companies permission or the moral right to advertise on it. And soliciting comments from the public on a weblog entry or other Web page does not mean that companies or individuals are invited to use it for their advertising purposes.

Reflected tags on Technorati: Blog, Spam, Spam Comment, Delete, Shenzhen, Plan, Targeting Spam