Most adsense publishers are looking to increase their ad revenue and here are a few great tips on doing just that. This is what Ivan, a UK based adsense optimizer had to say when asked by Google:
What are the top 3 tips you like to tell publishers?
1. Use wide ad formats. Many publishers find the 728×90 Leaderboard outperforms the 468×60 banner by about 70%. I particularly recommend using the 728×90 Leaderboard, 160×600 Wide Skyscraper, and 300×250 Medium Rectangle.
2. Embed Google ads in your content, and place Google ads at the end of your articles, news stories and reviews. Placing a 468×60 Banner in the typical slot at the top of page, or a 120×600 Skyscraper along the right-hand side of page, work well for cost-per-thousand impressions (CPM) ads. However, for cost-per-click (CPC) contextual advertising, AdSense tends to work best when integrated with your content.
3. Blend your ad colours into your website. After running a test with a bright pink 728×90 Leaderboard on a black background, I learned that complementary colours often work better. Try blending the background and borders of your ads into your site, and use a text colour that stands out but already exists on your site. Blending decreases ad blindness and users are more likely to notice ads that interest them.
Read more by visiting:
Inside AdSense: Meet Ivan the optimiser — but please, no paparazzi
Also, Google has updated their adsense program policies and if you haven't already familiarized yourself then you should check it out.