FanDomination.Net: Fushigi Yuugi: Self-serve archive for Fushigi Yuugi fan fiction.
Fushigi Yuugi Fanfiction Mailing List: Yahoo group dedicated to Fushigi Yuugi fan fiction with over 400 members.
Fushigi Yuugi Yui Fanfiction Site: Fiction focusing on the Seiryuu seishi and their miko, Yui Hongo.
FY Fanfiction: Alternate pairings and parodies.
Sei Shin Ryu: Fiction based on several different characters. Also has song lyrics.
Suzaku Seishi Fanfiction Review: Reviews Fushigi Yuugi fan fiction and offers writing tips. Also has a message board.