LinkedIn, the social network for professionals, is just about ready to do the adult thing and go public. Expected to have an initial public offering on the New York Stock Exchange tomorrow, LinkedIn says it could raise up to $405 million, which would value the company at $4.3 billion.

The shares are now set to trade at between $42 and $45, which is up significantly from estimates just two months ago that put the company's share price at $32 to $35.

Many other hot young startups have been reluctant to begin public trading. Skype, which was expected to have an IPO this year, recently opted to sell to Microsoft instead. If LinkedIn's IPO goes as well as forecasted, it could bode well for other companies considering making the move.


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