A very comprehensive WebmasterWorld thread has advertisers sharing their biggest AdSense tips and tricks. The post spans two pages, but here are some golden nuggets of wisdom:

• Medium to large rectangles outperform other ad types.
• Try to blend your ads into your website if possible because it increases CTR.
• Horizontal ads can be successful if strategically placed.
• Remove low earning pages and focus on high-earning pages for the highest eCPM.
• It helps to minimize AdSense on sites that have a lot of affiliate links.
• Put appropriate keywords around AdSense ads.
• Understand heatmaps of your site and place your ads in suitable locations.

Other tips are shared and expounded upon in the WebmasterWorld thread; feel free to join in on the discussion.

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