Facebook banks $1 Billion in profit thanks to mobile ad revenue
Facebook Earnings: 1.59 billion mothly active users
Fourth-quarter revenue grew 52%, to $5.84 billion, up from $3.85 billion as the social network drummed up more interest from advertisers. In same quarter Facebook reported net income of $1.56 billion. About 1.59 billion people accessed Facebook at least once a month in the fourth quarter.