SEOPTI - 9:32 pm on Apr 27, 2010 (gmt 0)
When showing the cache of URLs of a site I see something strange. A lot of public service ads or no ads at all as well as ads not related to the content appear. Using the adsense preview tool everything looks fine.
I have checked the cache of a different site in the same niche, it has 100% better CTR and the ads in the cached version look completely on topic without any PSAs.