Twitter co-founder Biz Stone quits
June 30, 2011  10:35
Biz Stone, the co-founder and public face of Twitter, is to cease his work with the micro-blogging company and team up with his former colleagues in an attempt to invent the next big thing on the internet.

According to a report in The Independent, the 37-year-old entrepreneur is restarting the company that spawned Twitter five years ago -- a venture called The Obvious Group -- to experiment with making 'systems that help people work together to improve the world'
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