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The digital media and technology industries are in the middle of a veritable shopping spree. Facebook Inc., Groupon Inc. and Zynga Inc. have been acquiring Silicon Valley startups at a voracious pace, moving quickly to secure valuable technology talent and to bolster their product offerings in fast-moving areas such as mobile, social media and gaming. In the first quarter of 2012, this trio bought at least 21 firms, more than double their combined acquisitions in the first quarter of 2011, according to The Wall Street Journal. And they are not alone: Google Inc. made 11 acquisitions in the first quarter of 2012, and Microsoft Corp., Twitter Inc. and Amazon.com Inc. are all expanding via acquisition too.

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