China’s version of Twitter goes public, but there are big concerns over censorship. Nine percent of China’s microblogging traffic disappeared last year due to “big brother” concerns. Plus, Aaron Smith, a senior researcher at Pew’s Internet Project, joins us to talk about American attitudes toward future technologies. Before a company sells for billions of dollars, it starts as an entrepreneur’s big idea, with venture capitalists stepping in somewhere in between. A new study shows VCs are more likely to back companies if the founders are the same ethnicity as the investors.