Well, I guess I'm only currently active in the Sherwood Smith fandom through a community on LJ but I'm pretty sure the fandom as a whole was so tiny.

My fandom adventures started off with HP where my shining moment was as a comments moderator on Mugglenet for all of about a month and a half.

Then came the Tamora Pierce fandom for about four years (where I was a moderator on a moderately sized message board). About 50 of us still keep in contact (somewhat) through LJ and AIM.

I was part of the Eragon fandom for a very short time as a fake person because I was curious about anonymity and identity on the internet and I figured I'd pick some place I could be a condescending bitch.

And then there's EoFF but I haven't participated much in the FF part. >.>