Facebook IPO filing could come this week

Facebook could file paperwork for an initial public offering as soon as this week, The Wall Street Journal reports, citing unnamed sources. The IPO is expected raise $10 billion, valuing Facebook between $75 billion and $100 billion. Facebook now tops 800 million users worldwide, with more than 350 million users accessing the platform via mobile device each month. Nielsen reports that Facebook is now the most popular application across all mobile operating systems. Article