I've had some tech friends walk me through what's going on. I still don't understand it. Important shit first, explanation behind the break:

FURAFFINITY.NET IS COMPROMISED, DO NOT LOG INTO OR NAVIGATE TO FURAFFINITY OR THE "FURAFFINITY STORE".

ALSO, FURAFFINITY'S TWITTER IS COMPROMISED AND DISABLED REPLIES, DELETED POSTS DOCUMENTING THE HACK.

Okay, details below.