The first time, Ficwad, looked like a great archive, but it was buggy, neglected, and may be losing its domain name in March. That will kill links to anything posted there. There are unconfirmed rumors it may shut down altogether. Considering the admin hasn't been seen in years, that seems likely sooner or later.
The second time was Fanlib, and I nixed my recommendation after everyone pointed out why it sucked raw eggs.
So my track record isn't exactly super. But third time's the cure?
I want to recommend that Everyone who has stories on Ficwad take the time to download them, upload 'em on Archive of Our Own.If you've checked my Index to All My Fanfiction page lately, you'll notice I've been doing exactly that. I was only halfway through, but this is the kick to get me to finish.
[ETA: Aha, Wayback Machine to the Rescue!]
It appears that the Wayback Machine last crawled Ficwad in May 2008. That gets a lot, although not all of the Final Fantasy fanfiction posted there. It's still be better to have it more accessible elsewhere.