“With Web 2.0, there is bilateral communication instead of unilateral communication,” says Mike Michalowicz, author of The Toilet Paper Entrepreneur (HarperCo Books, 2008) and owner/CEO of Boonton, New Jersey-based entrepreneurial investment firm Obsidian Launch. “Web 1.0 was just speak, speak, speak. Web 2.0 is speak and listen, speak and listen, speak and listen.”