Google is predicting that the person speaks German or is a Male between the ages of 26-30 who is interested in Technology and Wine-making, or what have you. Google sells "we can display your add to someone we predict meets such and such criteria." They make those predictions based on gathered data.
The prediction is what makes a million AdWords views more valuable than a million random people seeing the same content in a tweet. Both are "real estate." But it's the predictions (based on gathered data) that make AdWords more valuable.
Google is predicting that the person speaks German or is a Male between the ages of 26-30 who is interested in Technology and Wine-making, or what have you. Google sells "we can display your add to someone we predict meets such and such criteria." They make those predictions based on gathered data.
The prediction is what makes a million AdWords views more valuable than a million random people seeing the same content in a tweet. Both are "real estate." But it's the predictions (based on gathered data) that make AdWords more valuable.