FACEBOOK CEO Mark Zukerberg celebrates turning 28 year old today – and he certainly has a lot to celebrate.

This week, the social network is expected to begin selling stock to the public for the first time, with a potential IPO valuation of $100 billion.

But what about the man the helm of the company? Here are eight things you may not have known about Mark Zuckerberg…

Mark Zuckerberg turns 28 today: Here are 8 things you may not know about him

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Read: Want to own a piece of Facebook? Here’s how to do it

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