I understand the sentiment, but I do think that replying to people talking about exactly what my company does is an appropriate place to try and discuss what I'm working on. This is the only thread I've brought my product up in and did it because it is a discussion of the same concept.
So... the product I just launched is identical to what you described. An ad blocker with bundled contributions, check it out if you want: fairblocker.com
What you describe is exactly how my product works (FairBlocker). We split up a user's chosen subscription among sites where they block ads... I imagine it is what Contributor is doing, too. The way it is working out for us is that a ~$6.5 / month subscription is equivalent to a ~$12 net CPM, though it varies depending on how heavy a browser the given user is. So, higher than what many small sites normally make, but also lower than many video ads or top-tier sites with their own sales teams.
I just launched a similar concept to bundled microsubscriptions, which I mentioned elsewhere in this thread, called FairBlocker. Its an ad blocker with a monthly subscription that we split up among sites and pay out to the publisher (aggregating microsubscriptions from all our users). Another way to go after a similar goal.
We just launched almost exactly what you describe. It is called FairBlocker. An ad blocker with a monthly subscription fee (of your choice), which we then split up among the sites where ads are blocked.
We're looking for feedback from people who get the problem - what do you think? Feel free to email me directly if you want: [email protected]