@sozialwelten Interesting. Hope it will work.
Once there is a user base, I can imagine that companies would be willing to participate. If they are convinced their products are better and want to signal that confidence smaller companies may adopt it. Maybe not relevant for books, but the costumer feedback is also valuable.
@maxlath Yes, I would expect that it would start with small companies with quality products.
If there are peaches in a German supermarket and your app would show me that French people eat them, I would be willing to pay twice as much. Growers of good peaches will appreciate reliable quality signals, the big ones will not.
Books are good case, with many consumers likely willing to contribute.But feedback less important to create the next version of the book. @sozialwelten