have not got to you yet as far as meme responses go but: yuletide! it is a rare fandom fic exchange with a very large participant pool. right now is the brainstorming stage, where everybody gets excited about their fandoms and tries to lure new people into them. next is nominations, when anybody who is going to participate can nominate up to four characters in each of up to three fandoms. the resulting list of fandoms will be weeded for not-actually-rare interlopers (a process that causes much wank and stress) and then the remaining list, and all characters that were nominated for them, are the pool that is used for requests/offers. each participant asks for up to four characters in four fandoms from the list and offers some number of characters in some number of fandoms (I honestly can't remember exactly) as well. each person is then matched to a request that falls within what they offered to write, writes a fic of at least 1000 words and uploads it before deadline! (and then, optional, proceeds to write fic for other requests.) on Christmas Day, everybody gets their gift fic(s) and there is an orgy of reading, commenting and reccing! it's the best season of the year. :)