(or other streaming sites). I get that Amazon and Netflix or whatever, track my preferences. I have recently decided to poke around to see how preferences are determined. In Amazon, if I click on a movie link, without viewing it, I believe it counts as a preference. In Amazon, I can't really tell if by actually playing the movie gets more weight than just clicking a link. I also don't know how much of the movie needs to be viewed to have more weight. Anyway, when I was experimenting with this, I just got the coolest recommendations. Even though the movies were of the same types that I normally watch, the new recommendations (post experiment) really, well, made me happy. Not kidding. Happy. Any thoughts on the algos that the streamers use? Info, history, ethics, etc.? (Just kidding. I realized that my questions were maybe a little too specific or probling. While I'm retired from teaching now, it feels good to pose questions to a receptive and knowledgeable student body at TDPRIU.