(Telecompaper) Facebook reported fourth-quarter revenues rose 49 percent to USD 3.85 billion from USD 2.59 billion the prior year. Revenue from advertising was USD 3.59 billion, up 53 percent, and mobile represented approximately 69 percent of advertising revenues, up from 53 percent a year ago. Payments and other fees revenue rose 7 percent to USD 257 million. Operating profit was unchnaged year-on-year at USD 1.133 billion, and net income grew to USD 701 million or USD 0.25 per share, from USD 523 million or USD 0.20 per share a year earlier. After free cash flow of USD 1.07 billion in the quarter, Facebook finished the year with cash of USD 11.20 billion. Daily active users (DAUs) for December 2014 increased 18 percent to 890 million on average, and mobile DAUs were up 34 percent to 745 million. Monthly active users (MAUs) rose 13 percent to 1.39 billion in December, and mobile MAUs increased 26 percent to 1.19 billion.