Hello, my site http://muchgames.com is having major adsense issues. I put a text/image ad on top under the categories. There is suppose to be a 468x60 banner or text there. However all it shows is blank space, NO TEXT OR BANNERS. How could this be? I put as much text and links as possible to get the ads to work. I put lots of keywords and a long description in a META tag, but that didn't do anything. When you go inside a category like Strategy , Miscellaneous or even Sports, the banner starts appearing. I would really like to know how the Adsense crawler works. What does it look for? I tried putting keywords like RPG in big bold letters, but that didn't do anything either. I'm running out of ideas on what to do to get this to work. I contacted adsense support, but they never answer. I figure why not ask webmasters. I'm sure there is many out there that can give me a hand. Thanks for your time
AdSense populates your ads in the order they appear in the HTML, not the order on the Web form. You have an ad unit in the left side bar that is higher in the HTML then the ad at the top of your screen. AdSense populates the left sidebar ad unit first, then the top ad unit. If it cannot find more than five ads, then it won't populate the ad at the top and it will be left blank. Note also that the best paying ads also go in the first ad unit. That means your best ads are buried down the left sidebar and the ads near the top, which have higher CTR, are getting less valuable ads. I suspect by deleting the ad unit in your left sidebar, your eCPM will increase.