how do you greet and say farewell?

handshake/hug/kiss/kiss gesture with mwah mwah noise?

I just say hello and goodbye.

Kiss people can just get lost.

 

Just match what the person you are greeting wants.  Respectful distant bow for the emotionally-constipated Japanese, manly bearhug for Californian new-agers, distant nod for people from North of Derby, crush handshake for Septics, normal handshake for male Brits unless close friends, three cheek-kisses for posh lasses, four for French posh lasses, five in the Correze. 

Oh, and a fist in the face usually expresses my feelings for fellow lawyers, but none of them have yet twigged that, adopted my technique for calibrating greetings and punched me.  

3 ducks I do not have an issue with the greeting evolving, but in the UK at least its all a bit of a mess at the moment. One kiss, two kisses, very occasionally three kisses, hug or handshake. We need an agreed protocol.