"If you live in some sort of bizarre homogenous bubble where all your friends are just like you and have effectively the same tastes, and a lot of your friends

"If you live in some sort of bizarre homogenous bubble where all your friends are just like you and have effectively the same tastes, and a lot of your friends insist on reviewing every last Youtube video they see, and yet, have some sort of diversity of opinion that you might actually care about, this might work." I've never spontaneously seen a comment on Youtube from someone I know, as far as I can recall. However, it's really, really common to have friends of mine on Facebook share the same thing. This happens even for friends of mine that don't know or interact with each other. I think to avoid a fair amount of overlap you'd have to be very careful about adding only friends with orthogonal tastes... One of the reasons that things like politics are getting so polarized is that's it's really easy to fall into the "bizarre homogenous bubble", and that's where most people stay, online.