Join us as we welcome back Shel Israel, live from Sun's campus, discussing how and why businesses use Twitter and what you need to know right now. We'll be chatting about case studies, tips and other info from Shel's upcoming book, Twitterville. Shel Israel writes, speaks and advises on social media. He previously co-authored Naked Conversations with Robert Scoble, addressing how blogs are changing the way businesses talk with customers. He's now working on Twitterville[scheduled for release in September 2009], focusing on how businesses can thrive in Global Neighborhoods and succeed by using technology like Twitter.