Great in theory, but people in general do not understand the advertising model or just don't care enough about being tracked that the micro-payment alternative is attractive to them (even if there is a method of making it essentially anonymous and untrackable). I'd be happy to pay small amounts for an ad-free un-tracked experience, as may you, but we are in a minority small enough that it isn't worth chasing (and to be frank, I'm cynical enough to not believe I won't be tracked (more than just to ensure I got what the payment covered) even if I did pay...