Do not neglect the Link Unit!

A Link Unit is one of the most under-utilized ad formats. But if used correctly, and in the right
position, it can be really profitable format if put in the right place. It is supposed to be placed
near your navigation menu. Most people will think it’s a part of your navigation menu and
automatically read it. And if the ads being served are very relevant to your niche, they will click on it!
Try using a Link Unit format that has 4 keywords in them. This is because the size of the ad text
would be slightly bigger, and look more like a navigational menu. Also make sure to make the
border color blend with your website’s background