Help me clean up sleazy ads (again)

In the comments to another post, a new visitor named Spider writes:

While here reading you good information about spyware, protection, and the need for running several products, I was not sure if I should be amused or upset that your google ad’s linked me to five sites that wanted to sell me spyware removal software that are all contained on [the Rogue Anti-Spyware list] at Spyware Warrior’s site.  Ironically it was Spyware Warriors blog that led me to this page.

I wrote about this last September, shortly after I added Google ads to this site, in a post entitled Help me clean up sleazy ads. Since that time, I have blocked 42 URLs from the list of sites that I will allow to advertise here. Unfortunately, it’s a never-ending battle, because these people continually register new domains and change the names of their products to work around filters.

Most of the ads that appear here are legitimate and useful. Unfortunately, a handful of keywords have been taken over by companies that are less than honest. That’s a big problem when I write about the MP3 format as well, with ads suddenly appearing that offer unlimited downloads of music and movies but are actually links to suspect software and untrustworthy file-sharing networks.

The problem is not unique to this site. In fact, anyone who searches for anti-spyware software or MP3s or song lyrics is almost certain to run into this problem head-on. I’m considering adding a disclaimer above the ad strip with advice on how to avoid being scammed by these sleaze artists. If anyone has any additional suggestions, please leave them in the comments section here.

Update: Eric L. Howes has an excellent, concise description of the Google problem here. He also links to an ad-filter list at the Short-Media Forums. I’ve incorporated that filter list into this site.