I've been paranoid about the site going down, too... I've been meaning to do a siterip for a long time now... just in case, but never remember to actually do it.
I visit the site weekly (there are some times its a near daily visit for me) but don't post much... maybe I should post more?
But I've been working on my own "fan project" for a long, long time (I've posted about it before, its a Final Fantasy / Chrono series based MUD [Multi-User Dungeon - text based, online, multiplayer RPG] but it will never really ever be finished... MUDs don't ever really ever get "done" as its essentially a perpetual project you ALWAYS add to, expand, develop, etc.) and this site has been an absolutely invaluable resource for me.
Even if I siterip, I'll still visit the site just as much, my offline backup copy would just be a backup. I don't know if it really matters if the site receives "hits" or not, but with as useful and valuable as the site has been for me over the last several years, I'm happy to "give back" in any way I can.