While I agree that much of targeted advertising is very intrusive and not accurate, it's still very much cost efficient compared to anything. Initially, acquisi

While I agree that much of targeted advertising is very intrusive and not accurate, it's still very much cost efficient compared to anything. Initially, acquisition cost are there, either by generating SEO content or marketing or lead generation. Retargeting is one step beyond that, off course if you get ads for a car you've just bought, it's pretty bad. The ads should display aftermarket parts for that car or insurance offers, but these wouldn't come from the same vendor. At least it leaves some branding impact. Or if it's food items, it had led me to buy the same things a few times again. Source, very good friend is head of online advertising in a company. He swears up and down, it can be a very good product if you have a large online audience.