The e-tailing business is by nature a low margin business.

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Ms. Buchanan, co-author of the bestseller "The Daring Book for Girls, " says she set out to create a multimedia story that took advantage of the protean nature of the latest e-readers, which can function as a book one moment and a photo album or movie player the next.

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It is zero-sum in nature, i.e. it has little value to society.

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It published its results not in a major scientific journal such as Nature or Science, but in an obscure online journal called e-biomed: The Journal of Regenerative Medicine, which many leading medical scientists don't read.

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TV, NetChannel can turn a television set into an Internet terminal that enables users to send e-mail, interrogate the Web or share ideas with various interest groups around the world (eg, alt.nature.beehives).

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