Well, as long as you're a pre-pay (pay as you go) user anyway. The info doesn't seem to have made it onto Vodafone's web site yet, but as from 1st June, pre-pay users in the UK will be charged £2/MB for mobile data rather than the current £7.30/MB. It's not exactly flat rate, but it's a step in the right direction for those of us that don't want to go on contract.