I agree with most of this article, except, if I was Facebook I would bill via the mobile networks. Not really viable on the desktop, but certainly on phones.

I agree with most of this article, except, if I was Facebook I would bill via the mobile networks. Not really viable on the desktop, but certainly on phones. There's no reason that I can think of why I can't be identified by my own mobile network and either charged at the end of the month or via my airtime.