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Ralf Rottmann is a serial entrepreneur from Germany. He successfully sold his last business to Alcatel-Lucent. Follow him as @24z on Twitter and on Google+
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![How social media is going to change the way people work [video]](http://cdn.thenextweb.com/wp-content/blogs.dir/1/files/2011/02/084-480x245.jpg "Attention devs: From June 3rd, your apps might no longer work with Facebook!")
