Google’s long-anticipated acquisition of online ad service DoubleClick is coming to a close. The $3.1 billion deal just completed after nearly a year of regulatory wrangling. This new addition is expected to turn the Internet search leader into an even more powerful marketing vehicle that’s fueled by better insights about consumers.

Look out Microsoft and Yahoo… it might be best just to resolve the love/hate courtship to prevent Google from further gains in the race for Internet advertising dominance.

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