Now this thread confuses me. A member posted a thread named Overture And Spidering, where he reports findings of Yahoo's Crawler, Slurp, has been clicking on his overture ads.
In response to this post, YahooMike says;
This might be happening as part of an ongoing test. If you're using a tracking URL, the crawler visits may appear to be clicks on your listings. If this occurs you won't be charged for these clicks.
This is just so strange to me. Any ideas as to why Yahoo would want its crawler to click on its own Overture ads? I don't see any purpose to it. Alright, I am done trying to figure this one out - this is just too funny.