A fandom and shipping phenomenon, most of them based on LiveJournal. A Kink Meme is where a user (usually anonymously, though the rules on this differ between kink memes) posts both a pairing and a kink. Another user then anonymously fills this request with either art or Fan Fic.
While kink memes, true to their name, usually contain plenty of smut, it is usually permissible to request Fluff or drama fic with no sex as well.
When the fandom itself isn't RPF-oriented, this can come in the form of Character X paired with Real Person Y. The latter is often the former's creator/actor/voice actor.
Axis Powers Hetalia has one, and it was kind of infamous/controversial for having people requesting anthropomorphized and sometimes sexualized versions of real-life atrocities and tragedies until the mods banned such requests and began policing in more heavily. Can be found here. It's currently up to twenty one parts and shows no signs of slowing down any time soon. It's so active, in fact, that request freezes are implemented every five pages and each request cycle lasts less than a day — but on the plus side, it usually takes only about a week to get up to 50 new fills and reopen requests.
Durarara!! had one after only 4 episodes of the anime had been aired. Located here. Unique in that it's also extremely active enough to have its own community dedicated to posting daily updates. You can find that here. Even more unique in that one pairing (Shizuo/Izaya) is so often requested and filled that the fandom's started a separate kink meme not for Shizuo/Izaya, but every pairing that isn't Shizuo/Izaya.
Bleach has gone through at least two different kink memes; Kinky Bleach seems to be the active one now.
Code Geass has had severalsmallincarnations, which all eventually gave way to a rather large one that lasted until the mod seemed to abandon it. The current meme is here and includes both random polls and an anonymous discussion post as well as the main porn post.
The Death Notekink meme had slowed down but picked up speed again. It was moved to here due to the mod of the original one having disappeared and subsequent requests and fills not getting updated on to the page. There is also a secondary, less active, Death Note kink meme here.
There have been at least three different Majin Tantei Nougami Neuro kink memes, with this seemingly the most active at the moment, though the former hasn't completely died yet.
The Tiger & Bunnykink meme had the unusual honor that, in a really short amount of time from its creation, one series of fills have become popular enough to inspire the creation of a RPG fansite base on it.
Star Trek has its own kink meme. It's... well, it's very long. 15 parts, each of about fifty pages or so. That's a lot of prompts, and an astonishing volume of porn. Astonishingly, the meme appears to invert Sturgeon's Law - 90% of the fic is of above average quality, and at least half of it is really quite amazingly well-written. It's also been responsible, directly or indirectly, for a surprising amount of fic in the STXI fic communities. Due to Real Life smacking the mod in the face, it is currently closed to further entries. Its successor can be found here.
The Inglourious Basterds kink meme gets a special mention, because Eli Roth, one of the actors in that movie, found it. Then promptly linked to it on his Twitter. Then forwarded it to Quentin Tarantino. Amusingly, their reaction amounted to 'wtf, the Bear Jew always tops'. Omar Doom probably reached for the Brain Bleach, though. And Christoph Waltz's face must be seen to be believed◊. Note that this didn't really deter the fangirls: the RPF kink meme went up the same day.
Even Sherlock Holmeshas one. By late January 2010, it was up to three parts for lack of comment space (LiveJournal entry comments max out at 10,000). It's starting to die, but another kink meme sprang up and everyone moved over there, where the insanity continues at breakneck speed. There is a running joke on the meme that Sherlock Holmes star and admitted self-Googler Robert Downey, Jr.. either knows of its existence or has actually written fanfic for it (!!!). There are indications in interviews that he might know, and is terribly amused by it.
The A-Team has one, found here, focusing on both the movie and the original TV show.
Inceptionhas had one pretty much since on the day it opened. While it started off slow, with a single post for prompts, the comm pretty much sky rocketed. It's also responsible for some of the best written fanfics and best drawn fanart.
TemeraireKink Meme, for anyone who likes a little high fantasy in their Regency England slash stories. Here's Part II of the Temeraire Kink Meme andanother (unrelated) Temeraire kink meme.
The original Good Omenskink meme is now, for all intents and purposes, defunct. A new one has been started up here.
Sherlock also has one. It wasn't originally a kink meme, just just an anonymous fic meme, but it ended up being a kink meme. It's actually pretty good. The delicious archive is here.
Doctor Who has one on Livejournal that demonstrates fandom preferences quite well. The fics are divided into four lists: Those involving The Tenth Doctor, those with the Master, the RPF, and... everyone and everything else! There's also another meme, one for Eleven, and one especially for Jack.
The largest known kink meme on the Internet is the Phoenix WrightKink Meme. It can be found here and is organized by characters/kinks here. It even has a in-character kink meme, which you can find here. Note that the tags on the database are currently not working due to heavy bandwidth usage, severely limiting its usefulness for the time being.
The Persona 4Kink Meme, notable in that it already has six parts. Due to the mod of the original P4 Kink Meme vanishing, and anonymous commenting suddenly being screened, a new kink meme was created here. While nowhere near as long, there's also the kink meme for the other Persona games (though most of the requests are for Persona 3).
A Hanna Is Not a Boy's Name kink meme can be found here, as well as a regular Prompt Meme here. Sadly, the kink meme itself is dead, as the owner no longer lets new prompts or fills through. Someone make a new one?
Trying Human has one aptly named Trying Smut, with the alternate name of "Alien Dongs." The creator, Emy Bitner, not only linked to the Kink Meme on the official site, but has contributed.
Web Original
There's a That Guy With The GlassesKink Meme. It'll make you either cry for humanity or it'll suck out your life and leave you a fem!dom-loving, abuse-needing, crack-obsessed pr0n addict. A new one has started now that the other one is fairly crowded. It has a sequel, though both of them share delicious accounts. The meme was discovered by several TGWTG contributors on LordKats's Live Stream and two hours of pure hilarity ensued as they looked through and discussed the fics and thought up some ideas such as Angry Joe's mustache vs. Y Ruler of Time's mustache and Joe as a pretty princess which were quickly added to the meme and filled. There was also reading of some more porny stuff by the Cinema Snob and Jew Wario. The Transmission Awesome crew admitted they are aware and browse the kink meme on The Transmission Awesome podcast episode featuring Vange1us. On the same episode, they stated their requests, most of them slightly disturbing.
Survival of the Fittest has a relatively new one. It's not incredibly active, but it has spurts of movement now and then. A rule had to be made about requesting Rosa Fiametta again, due to the sheer number of people, animals, and objects she has been made to have sex with.
Transformers has both The Transformers Anonymous Kink Meme which was to full to continue at 60 pages and prompted the creation of tfanonkink. It should be noted that the Transformers fandom has 3 varieties of robot porn. Sticky (having humanlike parts), Spark!Sex (essentially pushing their souls together), and "Plug and Play" (sex through use of USB cables and the like).
A large list of kink memes is available here, although not all of them are still active.
The 2010 Winter Games has a surprisingly active, all RPFkink meme. Fangirl opinion seems to be that men's figure skater Johnny Weir really gets around. For reasons that amount to 'the mod is missing', the figure skating part of the meme relocated to here. And they even picked up their own version of the RDJ Running Gag, joking that Jeremy Abbott knows of the meme and wrote the fic where Stéphane Lambiel turned into a ham (don't ask). The new meme has also become the home of some truly bizarre meta.
Not even Formula Oneis immune. Due to a MIA mod, the kink meme moved to here and expanded to other forms of motorsport.
