Google certainly swallowed a lump of creepiness when they bought doubleclick, that company the state of Texas had sued for stalking. One of the former upper figures there was hired by homeland security. Wonder what skill that was for?
It seems we must ask if Google is far less evil than others would be in the same position.
I'm kind of liking the Apple iAds thing. If done right, it could basically do away with accessing third-party sites when displaying third-party content. The user demographic could be typed simply by the kind of app the ad is in, and just being an Apple customer probably puts him in a more sought-after group of spenders.
Hmmm. I just had an odd thought. For games with ads, dumb down the ads for people with low scores. Mental bandwidth adjustment...