Quote Originally Posted by Blubber View Post
enus.nydus = en_US and I'm guessing nydus is a specific server or load balancer or what have you that is named Nydus (http://starcraft.wikia.com/wiki/Nydus_worm).

Anyway, wasn't this a temporary offer?
Yeah I think it was temporary offer, but the links still work for some users, probably by accident. That's why I posted this if someone wants to try the "expired" offer