User blog comment:Sannse/Important Updates on Wikia’s New Look/@comment-1227408-20101003031059/@comment-1227408-20101003191852

Forking isn't the issue. We hold copyrights to many of the things on our site, and wikia doesn't. If they try to leave our wikia site open even after we leave, then ArenaNet can send them a "Cease and Desist" notice.

The copyright is only valid for the "Official PvXwiki" which will no longer be a part of wikia. Sorry, Sanse.