If your using AdSense, be picky in the selection of fonts, font size, colors, images, tables, and other visual aspects of your website. Draw subtle attention to your AdSense units. Make them stars of the your show! As a start get rid of the border, you can double your click-through's with this one simple tweak. Before the internet, ads in newspapers and magazines were marked off with a thick, heavy border. No wonder borders and boxes have come to symbolize advertising messages.
Ads with prominent borders make your pages look cluttered. They distract the eye from the ad text, while making off the ad blocks from the rest of the content. With just one simple click , you can match the color of your ad's with the background color of your web page. When the border blends with the background, it frees up lots of space. The page looks instantly neater and the ads look more inviting.