Professional social network LinkedIn.com has filed to go public. LinkedIn is currently hitting about $200 million in anunal revenues. This is up 200% from about a year ago. With a 10x valuation, LinkedIn is expected to have a $2 billion market cap. This means that founder Reid Hoffman’s 21.4% stake would be worth around $430 million. LinkedIn CEO Jeff Weiner would be worth $80 million. Sequoia Capital’s $4.7 million investment in the company would be worth $380 million. LinkedIn also recently acquired CardMunch, a business card reading application for the iPhone.