Adsense Secret #1
Color Blending is making your adsense match your content. Visitors have developed ad-blindness to adsense unless you make it seem part of the adsense content. Instead of having a border around the adsense, make sure it doesn't stand out too much on your adsense website.
If you website uses a lot of borders to separate content then maybe using a border for you ad will actually look better. If so then add a border. However most of the time having the adsense inside of content to where it looks like it is a part of the actual content is the best place to put it.
Adsense Secret #2
Adsense Tracking is how the adsense pros earn big with google adsense. What does tracking have to do with adsense? Everything! When you track your ads you start to find out what ads are actually performing and earning you money and what ads are not.
Think about it. If you could "fire" the ads that aren't making you any money and replace them with ones that will, you will be increase your profits. Tracking allows you to do this.
Adsense Secret #3
Adsense Positioning is another crucial step to increasing your adsense profits. But what areas are the best? Simple. Here is a heat map on the best performing adsense positions.