[NetBehaviour] Forks in the blockchain

[Edward Picot]

A question for Rob - or anyone else who happens to know - when there's a 
fork in the Blockchain, what happens to the old, discredited side of the 
fork? What HTML coders used to call the 'deprecated' bit? Does it 
actually get disabled, disconnected or stopped in some way, or does it 
just stay out there on the Blockchain doing its thing, and you hope that 
all the users have moved on to the new improved version, but maybe quite 
a lot of them haven't and never will?

Edward