I seriously do not get this privacy sham. All of a sudden everybody and there uncle is very concious about some algorithms (that select the ad for you) knowing what they searched for. I mean even if I search for something inappropriate and then google ads algorithm knows what I searched for, big deal yaar whats the harm?

I presume referrer headers existed even before google and this privacy outrage. The thing I do not understand is, why this sudden conciousness about some database of what you searched online?