I have stuff about Criminal Minds, Supernatural, Torchwood, Doctor Who (especially River) NCIS, The Following, classic rock, old movies, stuff I think is funny, lots of cats and an increasing amount of Crowley, King of Hell. And misc. animals for no good reason.
RebaK1tten on AO3, where I post fics, mostly CM and some NCIS & Supernatural.
I may be the oldest person on Tumblr, but can't pass up a site whose entire goal is snark.