mzanzig - 7:19 pm on Apr 9, 2007 (gmt 0)
I have not looked too much into this new scheme, but I wonder how the "completed sale" is being determined (technically)? Is it something that only can happen on Google's end, e.g. through Checkout? Or is it the advertisers' server sending some kind of "completed sale" message to Google? How is the program protected against manipulations by advertisers?