I recently posted about setting up a website for monetization with advertising and talked quite a bit about the need to work with different ad networks or ad providers and to test which ones work the best for you.
John Chow backed up my point on his blog with a report on his December blog earnings. As he says himself:
If I had stuck with only Google AdSense, the blog would have made just $693.36 instead of $2,790.05. It is a mistake to put all your eggs in Googleâ€™s basket. You should always be on the lookout for other ways to monetize your site.
Exactly John, try out and continue to work with as many providers of advertising or other revenue streams as you can without overwhelming your visitors. Hopefully you’ll end up like John and almost quadruple your revenue.