I have a number of niche based blogs and I've been testing a number of different layouts. The aim of my testing was to achieve an increase in Adsense revenue. As I'm sure you already know, the position and format of an Adsense advert can have a significant impact on it's effectiveness.
For the purposes of my testing I used a 336x280 Large Rectangle text advert with white background and no border.
It was not a precise test. I ran the site with a "Basic" theme for two weeks and then changed to a premium "News" type theme for the following two weeks. All traffic was from organic sources, none of the traffic was from paid sources.
Analysis of traffic sources:
- Search Engines - 70.59%
- Direct Traffic - 13.68%
- Referring Sites - 15.73%
When changing from the Basic theme to the premium News theme there was a decrease in Adsense earnings which may not come as much of a surprise. What may surprise you in the degree of difference.....{+}
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Very good advice.. It's absolutely necessary to blend your colors. if your adsence blogs look anything like this website.. I'm sure your pulling some numbers from Google.
The ProSence themes are still pretty powerful for being over three years old. Ofcourse most people want plug and play. I've got such a theme available if your interested in checking it out
http://saintseanzys.com/about/wordpress-niche-magazine-theme/
Let me know what you think. My email in my comment is valid
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Copywriting is also a skill that takes years of practice to become very effective in advertising what you are selling and .`,