Really cool project, going to play around with it, since I wanted to experiment with alternative algorithms for these kind of platforms for a while, but didn't found time to get started. My biggest gripe with YouTube recommendations, or any service of that kind (Spotify, Amazon, etc.), is that they don't understand what aspects of the content I value. So it is a huge hit and miss. Sometimes it works, because I guess…
I wish I could explicitly tell YouTube “don’t ever recommend videos I’ve seen.”
This is the part I don't understand, how is Google doing so bad at this. You get slightly better experience if you use Chrome. It (on purposely?) keeps asking you to click 3 buttons to play a video Edge, and won't even show comments.