You should also understand that there is really no down side to replacing PSA ads, and in my opinion, you'd be foolish not to. Indeed, other ad networks, such as FastClick, now also allow you to incorporate alternate ads when their systems fire blanks, although in true Google style, AdSense provides the easiest method with their online code wizard.

Judging from online forum posts on the subject, as well as considering the incredible number of sites that do not use Alternate ads, it appears that many webmasters believe Google or other ad networks will punish you for replacing their defaults ads. This is of course ridiculous. Why would they give you the tools and instructions on how to do this if they were going to penalize you? Now that you know how to earn extra revenue from your site, the challenge for many webmasters is how to make a "URL" actually appear as an ad. It's really not that difficult, and there are a couple of ways to go about it.

One new program that was recently created to address this issue is AlternateURL.com, where you can create an alternate URL ad in just a few easy steps in any of the standard AdSense supported sizes to your ad code.

Once created, you can embed the AlternateURL into your AdSense code. It's a simple solution that relieves webmasters from having to tinker with iFrames, CPA networks, or other systems to create an alternate ad for their Google ad codes.