I'm out of the loop, what did you find?
EDIT: I guess you're talking about this? From a first reddit page about why is it down I could find.
The owner did it to themselves, by mounting a surreptitious DDoS campaign and altering the content of the archives to slander people, thus making it an unreliable source. This prompted Wikipedia to (correctly) remove it from all outbound links.
It's moot if it's online anymore or not - it's not a valid archive.
