I am a man and I am not bothered by PDA, which would include for me:
Peck on the cheek, holding hands, hugging, one hand in other's back jeans pocket, nuzzling, kiss on the forehead, kiss on the lips, long kiss on the lips, something in that general area.
Anything after that and I consider it PDL, or "Public Displays of Lust".
J.
I'd generally agree with the exception of the hand-in-the-pocket thing, which I just find tacky. I actually saw a couple doing this at the museum and had to make a comment to the lady who went with me; she agreed.
Anything more intense than a long kiss is going too far for me. I really don't need to see other people tongue-tangoing in public.