Youtube and Google Now have turned into weird "interest-related" ghettos. I've completely stopped using Google Now and I only use Youtube via direct link (how does the most popular video platform have by far the worst discoverability? Would it kill them to add categorization and browsability?)
A good example: I liked "Azealia Banks - 212" on Youtube. Then, I got some random article about some crazy thing she did on Google Now and clicked. Now, there's some article about her in my feed literally every single day. I see how it happens, but it's annoying and makes me hate the product.