My first blog spam... I guess I had it comming. Very annoying to have to stop trackbacks because of an idiot that tries to flood my blog with links to his sites. All his sites, contain randomised text and adsense adds.
It's easy to report them to adsense. You just need to visit their site and click to "Ads By Google". This will give you the option of reporting Adsense fraud. I wonder how quickly google reacts to fraud reports.