A long time ago, Pocket (the web reader app) had the best recommendations. The pages I got recommended were exactly the kind of articles I used to read. Now, almost all the articles that are recommended are ads.
I'd say their original recommendation system was the best ever, and nothing like it existed. Is there anything like this these days? if not, I'm thinking of making a decentralized alternative.
The recommendation engine has yet to be built so would love to hear more about what you liked best.
I'd say this kind of recommendation is not hard to do. Pocket simply went to the dark side for monetization reasons.
This is why I wanted to look for a decentralized alternative that can be self hosted, yet communicates with other nodes for recommendations.