Well... I'm sure you know about patd. There are loads of communities related to fictions (like slashatthedisco, patdslashseek and icanhasprompt) and some dedicated to the members (brendonlove, daily_brendon, daily_spencer, daily_ryan and daily_jwalk). And then there is the community of my heart, failboatsinlove, dedicated to us Spencer/Brendon tinhatter :D
You can find news on PATD (and other bandom bands) on dotcoms_refresh. If you are on Dreamwidth, there's the brand new comm patd_slash (http://patd-slash.dreamwidth.org/). :D