Wadhwa Says Technology `Bubble' to Burst

June 29 (Bloomberg) -- Vivek Wadhwa, director of research at Duke University and a columnist for Bloomberg Businessweek, talks about the valuation of technology companies. Wadhwa also discusses Zynga Inc. and Groupon Inc., initial public offerings by technology companies and secondary markets. He speaks with Emily Chang and Cory Johnson on Bloomberg Television's "Bloomberg West." (Source: Bloomberg)