In my last post, I talked about Adsense Smart Pricing and how blogs can avoid it by only showing ads to search engine visitors.
One option for WordPress is the Who Sees Ads plugin, which has the ability to do this. I prefer the Shylock Adsense plugin for the reasons given in my last post: automatic placement of ads; no need to enter placeholder in each post; easy to move ads from, say, top right to top left, etc.
The problem with Shylock Adsense is that although it can show ads on old posts only (mostly search engine traffic), there is no option to show ads only to search engine traffic. I really wanted this functionality, so I added a few lines of code to the plugin to enable it. In this post I explain how to do it. Continue reading →