Hehe, dude, that piece is the equivalent of saying that oil will increase in price
Maximum FB saturation will be met, and may already have been, until some fundamental financial/socio-cultural borders are breached. There's no reason why usage won't remain fairly steady in its current form, though, as there is no reasonable alternative for the majority of us as yet. But that piece has no weight at all unless you happen to have recently bought stocks in it
ps. Gotta catch up for a pint soon!