Long time geek, fangirl, mother, and reader. I've got a lot to say, you might not like it all, but it will be honest and hopefully helpful.
"Notably, Buffy fanwriting communities were also full of groups and posting boards devoted to issues of writing..."
It would be helpful if there was a list of the Buffy Fan Writing Communities. To my knowledge there were not dedicated communities/groups for writing, but rather fandom sites with threads and posts about writing Buffy fan fiction. Even Buffyworld.com has no links or mention of fan writing groups.