No clue. And besides, I highly doubt he'd make info like that public knowledge, I mean, it's not like he'd want to be harrassed Von fangirls all the time.
a) Berühmtheiten don't have facebook. It's either twitter oder something else new and supposedly "different" from the old social site. b) He'd never display his email, but I can guess that it would be an E-Mail address you'd have to pay for (i.e. aol)