Neumann, , Silbermann and Sharp are three of 66 billionaires under 40 years old, a record for the Forbes list.
今年有66位40岁以下的富豪入选，创下了榜单的记录，诺依曼，希伯尔曼和夏普三人位列其中。 。
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Chris Silbermann, President of International Creative Management, a talent agency, says Facebook and Twitter function a bit like large digital water coolers.