Forum Moderators: martinibuster
* Relevancy Of The Ads - How context sensitive the ads are
* Leakage - Do you have other ads or outbound links on that page? Or on the site?
* Usability of the page - typically moderate to less user friendly pages have higher CTR as the user gets frustrated and leaves by clicking the ad.
* Quality of the visitor - Did she visit your site on purpose? If so better chance of clicking on a relevant ad. If she came to your site by mistake obviously she does not see the ads as related.
* Am I missing any points?