you don't understand how ads work, do you ? educate yourself about neuromarketing and read this 1920's book by Freud's nephew Edward Bernays.

Also you don't understand how profiling works, do you ? A visible effect is ads, but it's not the only one and there are invisible effects. See NSA, crackers and http://online.wsj.com/public/page/what-they-know-digital-pri...