Brian Halligan has seen the Grateful Dead perform more than 100 times. He is CEO & confounder of HubSpot, a marketing software company that helps businesses transform the way theymarket thier products by "getting found" on the Internet. Brian is also coauthor of Inbound Marketing: Get Found Using Google, Social Media, and Blogs and is an Entrepreneur-In-Residence at MIT. In his spare time, he sits on a few boards of directors, follows his beloved Red Sox, goes to the gym, and is learning to play guitar. Learn more at www.hubspot.com. Follow Brian at twitter.com/bhalligan. Since his first Grateful Dead show when he was a teenager in 1979, David Meerman Scott has seen the band perform over 40 times. David is a marketing strategist and a professional speaker. He is the author of the Business Week bestselling book The New Rules of Marketing & PR and several other books. He speaks at conferences and corporate events around the world. He loves to surf (but isn't very good at it), collects artifacts from the Apollo moon program, and maintains a database, with 308 entries at this writing, of every band he has seen in concert. He is a graduate of Kenyon College where he listened to a heck of a lot of Grateful Dead in his dorm room. Learn more at www.webinknow.com. Follow David at twitter.com/dmscott.