I've seen it posted around here but I think this is more of an optimistic hint than anything genuine so I wouldn't pay it too much attention. It could be a good thing but considering that Western Union is an established and long lived bank I don't know if it would be because the paranoid anarchist in me tells me they'd almost certainly try and find a way to spy on your transactions, not that they could in Bitcoin but certainly if you were to transfer paper money to them, I expect if they did ever do it there would be all sorts of restrictions and verification processes they'd force you to go through before you could move any money.