Now I'm not really a tactile person...
in fact if friends kiss me in greeting I'm bound to turn my head the wrong way and embarrass myself..
But. My advice is...

HUG THE PERSON YOU LOVE WHEN YOU SAY GOODBYE TO THEM

Even if you're just going out the door to work. Because you never know. I didn't hug my Dad goodbye the last time I saw him, I was rushing out the door one Boxing Day to avoid snow on the A1 on my way home to London, he died three days later, chance over.
And the sad news we've read on the home page this week makes this doubly true.

You will never look back and say "damn, I hugged XXX too much"
( Sallyrsm, Sat 22 May 2010, 13:27, 3 replies)

^ This ^
For pretty much the same reason.
(Billy The Fish wants to gargle with Lucy Pinder's bath water, Sun 23 May 2010, 14:25, closed)

Actually
my divorce was caused by me hugging my then-wife too much.
(Vlad the Inhaler forgot his password, Sun 23 May 2010, 18:06, closed)

No it wasn't.
Even if that's what she said.
(sabre-tooth monkey, Mon 24 May 2010, 11:58, closed)