A Closer Look: Facebook?s Operating Margins Decline With Growing Headcount, International Growth

One thing that has been remarkable about Facebook is its willingness to expand in developing markets that many other consumer Internet companies would otherwise write off because they're hard to monetize. But that growth abroad plus the company's increasing headcount and share-based compensation expenses are eating into its operating margins, according to yesterday's earnings numbers from a revised IPO filing. Facebook made $381 million in operating income (or 36 percent of its $1.06 billion in revenue) in the first quarter of this year. That's down from $388 million in operating income (or 53 percent of its $731 million in revenue) from a year ago. Net income is actually down 12 percent year-over-year to $205 million from $233 million a year ago. Here's a closer look at how revenues and costs are changing for the company:

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