I don't know how big it really is, but Tumblr seems to dig it. I mean, the aesthetic elements and traits of each can vary wildly, and sometimes pieces are almost unrelated. It might be obscure, I'm not sure, but it seems to all-in-all point to a sort of post-Internet post-Art sort of direction? It might be popular irl, but Facebook is ambivalent... It hasn't been too flooded with normies tho.