-1. I didn't fully understand your question, but Adblock will still block adverts. When a website adds the Oyster code to their website, they are able to generate financial revenue without having to resort to ads. People who host content on websites need to get paid one way or another, hosting costs money and generating content costs money. Visitors had legitimate complaints that advertisements are intrusive and off-putting, but monetizing traffic via Oyster is silent and hardly noticeable. A website can opt to run both Oyster and advertisements on their website at the same time, the point is that the visitor is given the opportunity to contribute to the website without paying a subscription fee nor dealing with adverts.

-2. This is where the IOTA Tangle comes in, here is their FAQ. Each Tangle transaction, which requires Proof of Work, contains a payload section that can retain data. The website visitor does not get paid, the website owner does. The website visitor benefits from the site content. The social contract of the website is that the website visitor must perform some computational work in exchange for consuming the content.