I'm suprised that you are suprised to find out google revolves around ads.
I wish there was a way for google to detect that I have never clicked on any ad online and bought anything by clicking on an ad, ever. Once google detects this, it should mercifully turn off ads for me realizing that it is a pointless endeaver and only serves to eat bandwidth.
I've only ever ordered things off Ebay once or twice, and it was the result of my own initiative to seek out a product and purchase it, not the result of psychological jedi mind tricks employed by marketing gurus.
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Windows Vista: Just say no.