Millenial Media, a leading mobile advertising platform, is out with another Mobile Mix report. It shows.Amazon’s tablets gaining share in the mobile content market at a fairly dizzying clip. The Mobile Mix report is based on billions of monthly ad impressions and it offers an interesting glimpse of emerging trends in mobile content consumption. Perhaps the biggest bombshell is that Amazon is now hogging 28% of ad impressions served to Android tablets; just marginally behind Samsung’s tablets that get a 35% share. No other Android vendor has achieved double digits. The cheapo Kindle tablet strategy has helped Amazon to already vault to the top tier of the U.S. tablet market when it comes to content consumption. Android tablets get 45%

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