Back when Google launched its contextual editorial ads (ads which appear on content sites vs search results) a couple of months ago, I poked their spokeswoman a bit on the subject of how they chose the partner sites involved, which at the time had to have millions of visitors per month to qualify to join the program. After all, the best AdWords advertiser results invariably come from very niche keywords and search terms, the exact kind of stuff you find best on niche sites.
This morning Google announced it is throwing open the doors to all publishers who want to join, regardless of size. The new program, entitled AdSense, allows any publisher to pick up and carry Google AdWords content ads on their sites in exchange for a cut of click revenue.
I'll be interested to follow results metrics of ads in future to see if the swarms of niche sites which will no doubt join will help advertisers get better results. (Results from Google non-search content ads so far have been generally abysmal in terms of clicks, and slightly below par in terms of conversions according to hundreds of MarketingSherpa readers surveyed earlier this