San Francisco-based micro-blogging website Twitter seems to have hit a tipping point in recent months, gaining millions of new subscribers, providing new immediacy to breaking news stories and even playing a role in the last presidential election. But the service also has its critics, who complain about dwindling attention spans and the dumbing down of journalism. Twitter co-founder Biz Stone joins us in studio. Stone also helped build social media web sites Xanga, Blogger and Odeo.
Guests:
Biz Stone, co-founder of Twitter and author of "Who Let the Blogs Out?"
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