Facebook's Q3 earnings left something to be desired, as the social network posted a net loss. Zuckerberg and company have ended 2012 on a financial high note, however, as Facebook raked in $1.585 billion in revenue -- an increase of 40 percent year-over-year -- and net income of $64 million. The number of folks on Facebook also continues to grow, with its monthly active user count burgeoning to 1.06 billion as of December 31, 2012. Of particular interest is the breakdown of daily mobile vs. web users -- more folks used Facebook on phones and tablets than on the web for the first time in the company's history. Revenue generated from mobile isn't commensurate with the usage stats, however. Mobile advertising accounted for just 23 percent of the 'book's total
