A user at WebmasterWorld knows that MFA and arbitrage sites have no benefit to anyone (except for the creator of the site). So what can be done about eliminating them once and for all? The member presents a strategy that may solve this problem and get quality traffic.
The automated solution to this problem imo would be to have following feature made available for adsense publishers:
"Don't show ads paying less than $x.xx per click".
With that option/control a publisher could simply raise the level of earnings per click above those of MfA ads, but keep it below those of legit ads so MfA ads wouldn't show anymore and MfA sites would soon vanish. The process of determing the level of earnings per click would be a market finding one for the publisher and the level would depend on the topic of his website.
Some users like this idea but think Google won't implement it. Google probably doesn't want publishers to overestimate the value of their clicks, for example.
Others don't think it's a good idea at all because the value of clicks on various parts of the website fluctuate. Some clicks receive more money than other clicks. The proposed solution is flawed. Also, the fear of putting PSAs instead of real ads abounds.
The discussion is heated and very lengthy (110 responses as of this publishing) but it is a useful read in case you have been considering this issue.
Forum discussion continues at WebmasterWorld.