Oh yes, it's definitely there - there is such a lot of good stuff on Tumblr, but it's also much easier to navigate if you have a currently active fandom. Then you can follow the people who are also involved in that fandom and the fic will come across your dash. But sadly despite an attack of interest in The Terror, I haven't managed to feel fannish about anything lately, which means I can't focus it down enough to be useful.