Why can't Mt. Gox open things up and allow use regular YubiKeys? Knowing how these work I'm not grasping their concept.
MtGox lock their keys down to only their service, I spoke to Mark about this because it would be much easier for everyone, IE I have 2 Yubi's for each exchange.
Mark said they were going to add support at some stage for the non MtGox YubiKeys, not sure how far away yet. These will work with our exchange and other YubiKey services.