T-Mobile U.K.’s 'Web but don’t Talk'

A couple of posts on T-Mobile UK's web 'n' walk professional wireless data tariff by ARCchart and Dean Bubley. Both aren't very enthusiastic about T-Mobile's usage policies. This conclusion from ARCchart sums it up:

It is one thing for an operator to curb VoIP usage on its network by blocking offending IP packets, but to tell your customers what they can and cannot use their internet connection for is just plain stupid.