"There is a significant body of scientific and clinical evidence supporting the safety and efficacy of ginkgo extract for both cognitive function and improved circulation, " said Mark Blumenthal, executive director of the American Botanical Council.

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Arguably that function has been picked up now by the smartphones with screens in the five inch mark, and the addition of a bluetooth keyboard completes the look of a netbook.

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"That might also be a function of the fact that these people are engaging more in social media, " said Mark Truss, JWT's director of brand intelligence.

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