It's very hard to quantify attention. And also, is that the most important? Quantifying a reward should not be given to an algorithm. That's the only reason why things like this[0] happen.

For me the best way is either a Netflix style network (like safari books), or something like [1].

[0]: https://unhashed.com/cryptocurrency-news/are-fake-websites-a...

[1]: https://taler.net/en/