• http://www.memwg.com Eric Giguere

    I wouldn’t really say that AdSense is “not directly connected to AdWords”. AdSense is a distribution mechanism for AdWords, after all, and the existence of AdWords is what made AdSense possible in the first place. At the time, AdWords was primarily a set of keyword-targeted text ads. The algorithms described in the AdSense patent (see my detailed analysis), a combination of in-house and acquired technology, let them automatically select relevant ads from the AdWords inventory without human intervention and drastically expanded the reach of their advertising network. This is why I tell AdSense publishers that a rudimentary understanding of how AdWords works is key to their success.