Like the Amazon suggestions system that after buying one bicycle pump tries to sell me more of the same because obviously collecting bicycle pumps is a hobby of

Like the Amazon suggestions system that after buying one bicycle pump tries to sell me more of the same because obviously collecting bicycle pumps is a hobby of mine. Exchange bicycle pump with vibrator for an even less welcome example. Even worse: the social graph mining derived suggestion systems that recommend wares based on the bad taste of my friends instead of my bad taste.