The location of the AdSense ads drastically effects the CTR. You don’t want your ads on the right or left sides of the page (a location often used by new AdSense publishers). You want them as close to the top and middle of the page as possible. This is true because the center of a web page is where Internet users have been conditioned to look for the content

The majority of informational sites layout their pages with their header across the top of the page, the navigation down the left, the content in the center and perhaps more navigation or advertising down the right. Anything located outside of the content box is often overlooked or ignored (there are a few exceptions, which will be discussed in the AdLinks section a little further down). This is especially true of people who found the page by using a search engine for a specific set of keywords. They want the answer to their question or a solution to their problem only, and are not interested in browsing or anything else. You want to place one large rectangle ad block just above your content, be that the top of the center column or on the top of the left hand side of the page. So, for example, if you have an information website about “widgets”, and you have an article reviewing the latest “blue widget”, then put one large rectangle ad block just above the start of the article text (but below the article title). That is one small change in this version of the ebook that can make a big, big difference. Putting one large rectangle block below the content title on the page helps draw the visitor into clicking the ad. Once they’ve read the title of the article, the next thing they see are the ads, which they immediately associate with the content and are thereby induced to click–which is exactly what you want! I was getting great CTR rates before by putting the ads above the title, but after switching the ads below the title, my CTR rose by 26%! That means that for ever $100 a month I was earning before, I was now earning $126. Not bad for a simple change like that, is it? Google now allows you to show 3 ad blocks, and you want to take advantage of that. The other place you must put an ad block is at the end of the content, right after the article. If you can get it in above the author’s “About Box” (if there is one), that’s perfect. The reason is that if the visitor has read the article completely, it is very likely that they will be interested in ads pertaining to that article. This is especially true of content which is a review of a product or service. (Just be sure that the article usage guidelines allow you to put your ads above the author’s About Box if it’s not your own article). So the top ad block catches those who are interested in products and services now, and the bottom ad catches those were wanting some education but are now convinced that it’s time to look further. But you get a third ad block to use, and if you aren’t afraid of cluttering your page with ads (and that is a valid concern for some), you want to take advantage of it. If your content is long enough, put the third ad block inside the content, and make your content wrap around it. This way you catch the visitors who get bored with the article. Maybe at first it held their attention, but they read all they care to read or were convinced early on and are ready to move on now. Put your ad block about half way into the text of the content so that you can give those visitors a place to “click away” from your site, a place that will make you money. Finally, there’s the AdLink ads. In addition to the three ad blocks, you can place one set of AdLinks on your page. If your navigation is in the left hand column of your site, put the 5-link AdLinks block above your navigation in whatever size makes it fit in well (200 x 90, 180 x 90, 160 x 90 or 120 x 90). That way the AdLinks links actually look like navigation on your site, and it induces people to click. If your navigation goes across the top of your page, use the wide AdLinks (728 x 15 or 468 x 15). Once users are done with the content, if they haven’t already clicked away on one of your rectangle ad blocks, chances are they are looking for more information, and so they turn to the navigation on your site to see what else you have to offer. Provide navigation in the form of Ad Links and you will see your CTR rise. I improved my overall CTR by 6.5% by using this method. That means that for every $100 dollars a month I was earning, I was now earning $106.50. Multiply that over many thousands of dollars, and it’s a real revenue boost. A simple change can make that happen for you as well.

Place one large rectangle ad block just below the title of your content on the page, and (if the content is long enough) one large ad block about halfway down the page (blended with the content), and a final ad block at the bottom of content, just before the “About the Author” box is there is one. Finally, put AdLinks on the page so that they look like navigational links.