I've literally only ever heard 'Wie geht's?'
Which is 'How goes it?' to my knowledge.
Damn German, it's the only language other than English I can speak passably and it's possibly the least impressive sounding.
(
Jeru War and Piss,
Thu 26 Jun 2008, 1:57,
archived)
If I remember correctly
you use dir or du with written correspondence, since just 'wie geht's' is quite informal.
You could argue that b3ta is essentially just a conversation, though.
(
emcake putting a donk on it since,
Thu 26 Jun 2008, 2:11,
archived)