Think what you like mate you're clearly not a bidder so I couldn't care less. The winner gets full rights over the miner that is associated with my account.
I am an honest person looking for some honest money so me and the girlfriend will have somewhere to live at the end of the month.
Your problem here is that BFL won't change shipping addresses. They're not admitting to changing addresses for people who have moved, and the email queue is so backed up that you might not get info amended in time for your move. It's recommended you have mail forwarded.
With this in mind the risk to the purchaser is that it gets dropped off at your old address and stolen or it takes another week to get redirected to your new address and another week to them, resulting in it maybe arriving at the same time as BFL gets near the end of the order queue and they might as well have ordered direct.
No worries with my old address. I am the only one moving, 5 of my friends are staying here for another year. One is a fellow miner and he knows the score... I can pick up my mail any time. It's not like I'm moving country, just counties