Social manners: Adam makes a good point about the social networking apps.
I’ve been invited onto the friends lists on Orkut and LinkedIn by several people that I don’t really know…Part of me feels awkward when rejecting these invitations, but I think I should know you before I call you my friend. Random, one-tme interactions do not make friendships. Once at LAX I stood in the security line behind Richard Belzer and said a few words to him. But that doesn’t make us friends.