Direct Operator Billing from MACH will enable Skype to bring a vital alternative payment method to these channels: Skype users will be able to charge their Skype credit to their mobile phone bill or pre-paid account, and enjoy the frictionless user experience gained from this payment method.
Next time a volcano threatens the air lanes, then, Dr Bennett's method may provide valuable illumination of what is happening, and thus enable airliners to steer safely through what might otherwise ground them.