Other communities that might be of interest to sfandf_critters members, on and off Livejournal. May have been mentioned in other sections.

write_away — an active and responsive general writing community. (Disclaimer: coyotecult involved there, too.)
sciencefiction — a general discussion science fiction community.
sfandf_writers — for discussing science fiction and fantasy writing.
__fantasynovel — for discussing fantasy writing and reading.
specficmarkets — for finding markets in SF/F.
sf_with_bite — for discussing soft SF, new wave, cyberpunk, and literary SF.
fantasywithbite — for discussing non-Tolkienesque fantasy.
swordandsorcery — for discussing sword and sorcery fantasy.
little_details — an excellent resource for research.
whileaway — for the discussion of feminist science fiction and fantasy
horror_novels — for the discussion of horror novels.