I read up on this giffgaff (what a name) sim earlier.

I like that they are open to suggestions as to what rates data should be charged at at the end of these 6 months.(EU reg's come to mind).

This outfit does seem to be a venture with o2 who currently charge £2.94 per mb so anything below that would be good. Data bundles could be introduced though instead of a per mb charge.

You must be aware though that the 6 months is from today so if you get a giffgaff card in January say then there will only be 5 months remaining..... that is how I read it anyway.