Getting back in touch with some of my old friends and colleagues through LinkedIn has made me wish that my life was like it was when I worked on network protocols, in groups with other software engineers, participated in technical forums, etc.
Anyway, I decided to contact a couple of people I used to interact with. One is a former UCLA grad student; the other writes articles on telecom policy. I sent them some email about click fraud, including links to some of what I've written here and the Tuzhilin report, to get their opinions about it. I don't know how much either actually knows about it, but what they say may have a bearing on how much time and energy I spend on it in the future.