I hate YouTube recommendations. They just show you the same videos again and again after some time.

for the sake of society and the future of humanity, recommender systems should introduce an element of randomness ... say I view items X and Y, and I am only very slightly inclined to pick Y .. next time the system shows me Y1 and Y2 because I like Y's... I pick Y2 and then it recommends Y21 and Y22 etc. .. never again would I see X, X1, X2, etc. although I might have been interested in checking them out, it's just that I had to pick something

I really think Amazon, Youtube, Netflix etc. shpuld have a "random picks" section .. not bestsellers, not most watched, just random