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those targeted adds are effective. They are always trying to sell me tires tools and used cars, even pelican parts add pop up sometimes.

I think these companies forgot one thing though, people hate being targeted. I think smart people at ad agencies assume that bringing people ads for stuff they may want is a good thing.

I think the reality is most will resent being snooped on and will decrease not increase sales. Im sure there is data to prove me wrong or they wouldent do it however.