Less than a month ago, I mentioned that Technorati had switched from Google Adwords to Yahoo Search Marketing as their ad server of choice on search results pages. At the time, the ads looked like this:

And now they look like this:

Floyd Landis has been blogged about almost 7,000 times over this period, and apparently it was long enough for Technorati to learn that Google drives more revenue than Yahoo for their site.

Whoever has the most advertisers and ads in their network - assuming the ad network functions properly - will be able to serve more relevant ads at a higher average cost per click than their competitors.

Read more at Technology Evangelist.