Targeted advertising makes ad delivery efficient. If you somehow turned off all targeted ads today, the advertisers are getting less bang for their buck. The

Targeted advertising makes ad delivery efficient. If you somehow turned off all targeted ads today, the advertisers are getting less bang for their buck. The price they would be willing to pay sites will drop dramatically. How do you compensate for that lost revenue? More ads? "Donate with PayPal" buttons? Although there are legitimate concerns about everyone tracking everyone, the Internet is less annoying overall as a result of the advertising efficiency of targeted advertising.