m. Go Wide - The large rectangle is the best paying adsense format (336x280) - The Google Adsense Publisher team also feels that the best formats are the wider ones - the ad formats that contain the widest individual ads. Try using the 336x280 large rectangle, 300x250 medium rectangle, or 160x600 wide skyscraper.
n. Placing images next to ads or above ads does help in attracting user attention.
o. Blend AdLinks with other navigation links or place horizontal adlinks at the top of your webpage. AdSense publishers are permitted to click on link unit topics on their web pages, provided that they do not click on any Google ads on the resulting page.
p. Organize an Adsense Party for your friends and colleagues - Request them to navigate your website, watch their activity - it will provide vital clues about which regions on your website draw more user attention. Try putting ads near those areas. (Thanks Darren)
q. You can put upto 3 adsense units on a page. Try putting a large skyscraper on the right navigation sidebar of your website. That area is close to the browser scrollbar. You can also add 2 AdSense for search boxes, 1 adlink unit and 1 referral button per product (i.e., 1 AdSense referral button and 1 Firefox plus Google Toolbar referral button).
r. The first few lines of your content are an important factor for determining what Ads are served on your webpage. That's the right place to put keywords in bold or header tags (h1, h2, etc).
s. Always select the setting to open Google Adsense search box results in a new browser window, so you won't lose your visitors. Click the Open search results in a new browser window checkbox and this add target="google_window" to your form tag.
t. Maximum people think the search box is on the top right corner. So you know where to put it.
u. Don't syndicate full content. If people can read everything from the newsreader window itself, why would they visit your website where your ads are.
v. Use URL channels to determine performance of individual pages. I track my most popular pages with Google Analytics, Statcounter and create a channel for each of the URL. You can even track Adsense Clicks with Analytics
w. For low CTR pages, try changing titles or adding more content to get better focused ads
x. Block low paying advertisers with Filters. Why to loose a visitor for 0.01 cents. Use Overture or Google Adwords Keywords tool to discover keywords that are less popular with advertisers.
y. The AdSense for search Top Queries report shows you what your users are looking for, by listing the 25 most common searches conducted through your AdSense for search boxes. Use this report to identify additional topics to add to your site, or to keep track of your most sought-after information. Focus and improve that content.
z. Not everyone has a RSS reader. Use RSS to Email services like FeedBlitz, Bloglet or Rmail to let users subscribe to your blog by email.
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