Twitter opened the door to interactive, real time networking, relationship building and learning .. one 140 character tweet at a time. The next generation of tweets takes it up a notch to structured conversations among many. "Tweet Chat” pioneers join Toby to talk about the value and implications of Tweet Chats: Mack Collier, @mackcollier #blogchat; Dana Lewis @danamlewis #hcsm; and Marc Meyer @marc_meyer #socialmedia.