Firefly cellphone for kids reviewed

Firefly cellphone for kids reviewed – Engadget
I can see why parents would find this sort of thing useful in terms of increased peace of mind, but really, do kids need to be contact-able 24/7? I guess some would find it pretty cool, but the novelty will fade fairly quickly, and then I can imagine it being 'forgotten' a lot. Or accidentally turned off/not charged.