So basically you receive only the money for the sale & at the most? The info on what product they purchased?
Sponsor DB's all the remaining valued info for they're own future use?..
Hmm

So pretty much webmasters are at the mercy of sponsors, since webmaster don't have a shit say so either.
Now under the assumption that all your valuable traffic is USA related, cuz foreign traffic is mostly rubbish except for general U.K area?
well how do you know this then? since your traffic is very broadly inserted through websites?
If you where able to narrow down your most populated porn purchasing state? or city? would this serve any value to a webmaster?
Who's idea was this affiliate promoting idea originated from anyway...