[bigtech]

Seems possible from the technical side, but not so sure about the money part. if I'm following you correctly, XYZ.com would have shown an ad on their site and received, say 1 cent. With your service running, you visit XYZ.com, ad is replaced by a white box, and they receive, let's say 2 cents? If so, seems like efficient microtransactions will be a challenge.

[jacquesm]

That's the idea, the microtransactions will be taken care of by the existing ad networks and will end up in the aggregate payment from the network to the site. Sites effectively won't even know that it is happening.