Community on tumblr is founded on aesthetic affinities. The unfolding of a tumblr blog, the eternal scroll (I can’t stand tumblrs with pages, it’s a bizarre form of skeuomorphism, just don’t do it) is something that is absolutely iconic and singular to the tumblr aesthetic.
The kind of unfolding that the infinite scroll allows creates a stream of unrelated/semi-related/interrelated yet representative images all in succession that reflect the aesthetic identity of the tumblr user. If you Follow them, then you are incorporating elements of their aesthetic into your own. Tumblr is for gazing, for affirmative pleasures. I’m assuming most people don’t follow tumblrs that piss them off – that’s what your friends from back home on Facebook are for.”