David Miliband and the graduate tax

As James Kirkup notes, it looks as if David Miliband supports a graduate tax – only ‘looks’ mind, we can’t be sure. The university funding debate is now captive to ill-defined terms – is what is being proposed a tax, a fee or a contribution? David Miliband is hard enough to comprehend as it is, but is he talking about a graduate contribution or a graduate tax? How would either be assessed? Also, does David Willetts make any more sense?