If you are like me the technical aspects of this business easily become stopping points. Recently I’ve been having problems getting geotargetting working. Lucky for me John West, aka Westech, has written an article over at WebSitePublisher.net on setting up ad geotargetting with php.

Why is this important to do? First, Yahoo doesn’t want non-US traffic right now from YPN users. At best they won’t pay you for it, at worst they’ll kick you out. Many publishers have reported higher earnings from YPN over Adsense, yet they still have international traffic. It makes sense to geotarget YPN ads to your US traffic while delivering Adsense to the rest.