Analysts speculate Facebook's worth in IPO

Facebook could be worth more than Google was when the search engine company went public last decade,

Google was valued at $23bn when it went public and rose to $27bn after the first day of trading.

Investors who are buying or plan to buy shares of Facebook expect that the company will go public with a market capitalisation of $35-40bn, Jessica Vascellaro wrote on the WSJ sister blog Digit.

Private online exchange company Sharespost, meanwhile, estimates Facebook's current valuation at $11.5bn.