In today's edition of the Online Advertising Checklist, Google AdSense images aren't so hot for some, looking at how AdSense has grown, clickfraud, and the latest marketing attempt to bring in publishers.

• Fred Wilson lays a smackdown on his Google AdSense stats, which he claims went into the can after repeated instances of the image advertisements started showing up on his blog
• Sharon Housley details the evolution of Google AdSense over at WebProNews
• It's no wonder companies are flipping out about click fraud when people are publishing a list purported to be the "Top 100 paying keywords." If your site says "This information will help you determine what keywords you should use in your Pay-Per-Text to earn the most $$$" then you're obviously attempting to game the system.
• JenSense is enjoying the latest demo of the Google AdSense program, which I have to admit is pretty slick.