[GeoffW]

I'd ask Kent if he could divulge exactly how many ISPs have used his system on live users in trials or other guises in the UK. If he won't answer that, then have VM or Talk Talk carried out a trial prior to signing up his company.

I'd also ask how he expected to entice users to opt in to a true opt in system? What sort of things would they be told. After hearing his waffle, then point out all the things they would not be told.