After a week of split testing Adsense I have a clear winner for the Ad format that generates the most revenue on my test page.

I worked out the Earnings per Click (EPC) and the Click Through Ratio (CTR) for each Ad and compared the figures.

The Ad formats that I was comparing were the 728×90 text unit and the 350×250 text unit. The 350×250 Ad had both the highest CTR and EPC. Multiplying the improvement in CTR and EPC gave an overall improvement in potential earnings of 42%.

So this comparison was well worth doing and I will switch over to the higher performing Ad unit for this particular page.

Update: 

LOL I haven’t switched to a fixed Ad format yet since the  728×90 text unit produced more revenue a day or so ago, so I am now thinking to continue with the eCPM balancing idea for a month or so.

Something I didn’t mention before is the visitor irritation factor. The thin-wide Ad unit is more visitor friendly to my eyes so this is another reason I don’t completely want to let it go.

This entry was posted on Monday, May 26th, 2008 by Andy and is filed under Ads. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.