Ok, so I made myself curious, so I typed up what I could remember with a few minutes of thinking, which includes the occasional long-gone oldbie:

(SPOILER)Cid
Dan Walkie
erik ramza
Princess Usa
Big Ogre Umaro
God/Dr Unne
Emerald Aeris
ShlupQuack
Loony BoB
Del Murder
Miriel
Levian
Psychotic
Rantzien
Kossage
Jiro
Guardian XIII
Genius Lynx
NorthernChaosGod
Doomgaze
Ally
DocFrance
The Man
Shoeberto
Rubah
Peegee
Sagensyg
NeoCracker
Freya
I’m my own MILF
Rye
Jessweeee
Jess
Yar
Marshall Banana
foa
RSL
Roogle
Smittenkitten
Zeldy
Buttheponcho (he’s a member, right?)
Jojee
Krissy
Shauna
Zeldy
Celes
The Abominatrix
Chemical
Dignified Pauper
Joel
I Took the Red Pill
DK
Mellisaur
Linus
Leeza
Skyechan
Citizen Bleys
Agent Proto
theundeadhero
eestlinc
Yamaneko
Bahamut2000X
Britt
Asorie
Heero Yuy
Necronopticus
Jowy
Christmas
Knox
qwerty
Kirobaito
Ferenan
TSoL
UnbreakableWill
Nikki
Chloe (three obvious ones that hardly count)

70-something, I think.

EDIT: Oh wait, I realized Nic is also a member here, so add Nephemera to that list.