Just a question/suggestion really. Given the international vibe of this forum, wouldn't it be useful to have somewhere on the site where there is a list of network providers with tariffs suitable for visitors/tourists when travelling abroad? I.e. Those that provide daily pay as you go rates without requiring national credit checks or an "in country" billing address - or provide simple ways around it (using prepaid visa from the country visited for instance).
I just think it would be a resource extremely useful for many here if it was possible to manage it in a way which would make sense.
My contribution: Anyone visiting the UK - http://shop.o2.co.uk/ipadtariffs/