"The Romans believed that what no man controls, no man can own. Justinian, writing in the sixth century AD, said that the air, flowing water, the sea and the seashore were common to all."

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An electronic paper has infinite space because you can bring forth as much content as a reader wants. And the resolution of ads is very high. And when you touch the ad you can interact with the advertiser and the paper will take you to the advertiser's Web site and you can get more information. So ideally there should be a better connection between the ads you're shown and what you're actually interested in.

— Russ Wilcox