> Presumably if the sites wanted to operate under that model they would be already.

Not if the economics don't work out. I earnestly thing the Internet would be vastly different if microtransactions were feasible 20 years ago. I was hoping Paypal would enable this because credit card companies seemed to have no interest since their per-transaction fees are so profitable.

It does make it more ethical. There is no easy way to set up an own advertising network for every website, ads are pennies.

> Brave's effective CPM

You will find that everyone except google has terrible CPMs. I like the fact that they are exploring new delivery technologies though