With respect it's absolutely incredible that people think that interest based ads aren't responsible for declines in Adsense earnings. If it made sense you would see it used on the mother ship Google search results pages. If anyone can explain to me or show me examples of businesses that have a store front and signage for a restaurant but behind the door is a shoe store, please let me know. How the hell does anyone know if it was an ad related to your content that got clicked or whether it was an off topic totally irrelevant ad they clicked? Logic says and the reality shown in the past is that the more relevant the ad to your page, the greater clicks, the great earnings. I give up explaining this more. It's another topic but perhaps I need enlightenment to the motive, rationale, etc. as to why interest based ads are the new way. There is obviously a "big picture" aspect to this for which I don't understand.