Since sometime last year, I've been very into the Hobbit fandom. I mean, I've always loved Tolkien, and when I first read LotR in early 2005 (I read The Hobbit back in 2003) I read a lot of fanfics, but I hadn't read any Tolkien fics in years. I watched the Hobbit movies and loved them but didn't really get into the fandom. That changed last year when someone sent me a link to a Thorin/Bilbo fanfic and I fell in love with the pairing. Since then I've been avidly reading lots of fanfic on AO3 and the Kink Meme and following some fans on Tumblr and generally going crazy (and denying the deaths in the canon ending - LALALA EVERYONE LIVES HAPPILY EVER AFTER).
In general, I love it. The quality of fanfic in this fandom, or at least for this pairing, tends to be pretty high overall, and there have been some fabulous AUs and continuations out there. There are also masterpieces like the Coats & Customs series, which basically fixes everything that ever vaguely bugged me about Tolkien and epic fantasy in general - not enough female characters, no queer characters, no characters of colour, unsatisfactory resolution for the orcs, the Elves fading - and this series, and these two fics broke my damn heart. There are also a lot of fantastic and very creative AUs with impressive worldbuilding. Basically I could rec fics until the cows come home, or you could just check out my Bookmarks page if you're interested.
However, there are a couple of things I've noticed in fics that I just have to rant about. (These are mostly due to the fact that I am a history nerd and overthink details like trade and farming resources and the history of fashion in Middle-Earth and I feel the need to ramble about them, and not actually criticisms.)
( Why hobbits do not eat chocolate and wear one-piece dresses... )
That said, despite my rants, I generally read and enjoy the fic anyway, and most Hobbit fanfic is fantastic. <3 And the fandom is lovely. I love how everyone is in collective denial of the ending and writes fics about the Durins surviving the Battle of Five Armies and persuading Bilbo to stay in Erebor, and after the last movie comes out this year and reduces me to a sobbing mess in the cinema, I will definitely be in need of fix-it fic. XD