Um, okay. *g* Bear in mind these are just the ones I have friended, and that there are oodles of other SGA comms out there. ;)

atlantis_news, atlantis_vids, gate_unleashed, geek_repository, harlequin_sga, metagate, metalantis, prime_not_prime, psychic_snakes, sg_research, sg_workshop, sga_6degrees and stargateanon. They're not all fic comms but some are quite useful and interesting. :D

Also this (http://darkhavens.livejournal.com/151447.html). ;)