This came up in another thread but was off topic there so I thought I'd start a new one. Originally O2 were proposing that 'unlimited data' meant a fair usage cap of 200 MB per month. They've now changed this policy:
Not sure I'd make 200 MB anyway, but it's nice not to have to worry.
http://www.telegraph.co.uk/money/main.jhtml?xml=/money/2007/11/03/cniphone103.xml''Customers find 'unlimited with limits' confusing, plus most people don't speak in megabits or understand what they equate to," said O2 UK chief executive Matthew Key.
''So we've taken the decision to remove the fair usage cap so that 'unlimited' really does mean 'unlimited' ? this is a market first."
Not sure I'd make 200 MB anyway, but it's nice not to have to worry.