I've got some reseller hosting your welcome to use while you gauge things. I can limit the bandwidth to prevent it running away - I have 500GB a month to play with and barely tickle it really.
Don't know how feasible it is in the long term, but as I say, totally happy to help if I can.
I wonder if, between that, Teh and anyone else we could fix up a simple CDN. What do you think Matt, could just do it round robin style, or even just random.
Edit: I personally dislike the idea of using torrents for this, primarily because I don't have a torrenting program installed and it's a bit iffy running it when I'm on-site or at work.
EDITED: 16 Jul 2012 19:31 by PILOTDAN