I dunno — do you really think that a handful of webheads installing a plugin (think a double-digit percentage of Firefox users is possible? I don’t) of a minor-league browser (wow! 5%! let’s be honest here) is any sort of competition to armies of Indian clickers? I don’t, and I don’t even see the advertisers running scared from that prospect. SpamAssassin and other Bayesian filters make spam invisible to most of us now — a FAR higher percentage of impact — and it hasn’t seemed to stop spam.
So, cute idea, but I hope you weren’t serious.