Information may be power, but collecting too much of it could cause Google Inc. trouble.The Internet search leader said Tuesday that the Federal Trade Commission had launched an antitrust review of its plan to buy DoubleClick Inc., an online advertising firm, for $3.1 billion. The FTC gave Google a detailed list of questions about the deal's potential effect.
Concerned about the implications of marrying Google's vast amount of consumer information with that collected by DoubleClick, public interest groups have pressed the agency to review the deal.
Google rivals including Microsoft Corp. also have asked federal regulators to block the deal, saying it would hamper competition in the booming online advertising industry.
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