Twitter inevitably comes up in every IPO discussion, but it's still unclear whether it will file to go public in 2013. Twitter's top management has consistently put off the idea that an IPO is looming, most recently in a CNBC interview with CEO Dick Costolo in September. The company has its pre-IPO ducks in a row, including strong management and tremendous growth potential. eMarketer predicted Twitter's 2013 revenue at $545.2 million in October, that's an estimated growth of nearly 88%. If the social media site can meet these lofty revenue targets, an IPO decision might be an easy one to make.
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