Are Hop-On disposable phones a good idea?

The idea of a disposable mobile has been around for a few years now, and one of the major proponents, Hop-On are introducing it to Europe and the Middle East.

Over the last two weeks they have already received orders for 150,000 phones.

In some ways the opportunity is obvious, especially if travellers leave their mobile at home, or lose one, and need a temporary replacement.

However the waste of precious resources in producing these phones troubles me, and the potential use by criminals and terrorists, if bought from back street dealers, may be too high a price.