Of course, young social networkers at your house already know all about "weak ties" - they just call them something else: their social-network "friends." Some of them are friends in real life, some just friends of friends, kind of second-tier friends, or somebody they met at the last away game. It's just helpful to have a fellow adult explain what friends in social-network sites are like from a … [Read more...] about The ‘weak ties’ that bind