I then realized that, when I'm searching to purchase something on Google, I may click on half a dozen ads in a minute - but realistically, each of those has a chance at getting $20-$40 worth of revenue (and the potential, as in the case of monoprice, of hundreds, if not thousands of dollars of revenue after I discover the site)
I'm wondering if anybody has done a definitive study on the conversion value of a "click" on google versus Facebook, both in terms of brand recognition, immediate conversion (purchase), and long term conversion (delayed purchase) - that study, if definitive, would probably adjust GOOG/FB by 10s of billions of dollars - clearly a leading indicator of future revenue.