(I wonder how this will tie in with the rise of the Internet and mobile phones; could we see a generation who have inarticulate verbal communication skills but can SMS rings around anyone today; a brave new world of grunting, nimble-thumbed cyber-cavemen? The interpersonal skills of a borderline-autistic IRC junkie could be the norm within a decade.)
But those people still rely on verbal communication a lot with friends. Extrapolate this a bit, and we may yet see a generation of "mole people" who are enmeshed in electronic communication but don't get the idea of eye contact or personal space. We may see friends texting each other through personal Bluetooth networks as they walk down the street, or even the idea of spending time physically with people (as opposed to within range of them) becoming old-fashioned.
Ahh, the digitals vs the verbals again...
And then there's the neo-luddite backlash, and "if you don't know what someone smells like, they're a stranger".
I think real events have overtaken your predictions; someone was telling me about an 'SMS-contest' run a while back. Apparently the organiser was inspired by the spectacle of a checkout-chick putting his groceries through with one hand whilst messaging friends with the other.