betweenfriends: Dedicated to fanfic, fanart, and essays or discussion about the trio including all pairings found within. (Harry/Ron, Harry/Hermione, Ron/Hermione, and Harry/Ron/Hermione)Feel free to rec others' works as well, or post older fic and art.
mortalmoon: A Remus/Harry-centric fanfiction community, with bi-weekly drabble prompts as well. Members must be over 18.
not_a_spare: A community for anything related to Cedric Diggory, this includes fiction, art, manipulations, vids, and general discussion. In order to combat fandom fractionalizing, this comm brings it all together ... as long as it has to do with Cedric. Fiction? Any pairing welcome here (het or slash) -- or none. Any rating, any length. Visual art? Same deal. Discussion? Have at it. One-stop shopping for Cedric.
hp_het: Anything het (i.e., involving heterosexual pairings) in the HP-verse! That includes fanfiction, fanart, fanmixes, icons, discussions...whatever!
harry_mwpp: is a community for stories, art, and other content that focuses on interaction between Harry Potter and one or more of the Marauders (Remus Lupin, Peter Pettigrew, Sirius Black, and James Potter). We accept both slash and gen. If your on-topic fic or art contains het, that's fine too. The important thing is that the Harry/Marauder relationship is central to the work.
ginny_love: for fans of Ginny Weasley. Fic and art/graphics are welcome (all pairings and gen, as long as Ginny plays a central part).