We also thought about this at Steady (www.steadyHQ.com). We built a system for recurring payments to independent creators and some of our publishers allow users to pay for not bugging them with their adblocker detectors. This generates additional turnover from users that normally do not get served any ads b/c they use adblockers, but I believe such an offering should encompass all ads, not just Google AdSense (why would you pay just to reduce the amount of
ads), and it should include removing paywalls (e.g. at a higher price point, to monetize "superfans").