The site offers new deals each day, focused around seven sets of themed product offerings from different brands.

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The first impression of a person, product, or place sets the bar for any relationship.

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Operating in these situations exposes corporate staff to new sets of customer challenges, which can often deliver innovations in product design or services into the business.

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Launched last October in America and Britain, the product has been a tremendous success, outselling by a factor of at least six the 12, 000 sets that Lego thought it would sell in America before Christmas.

ECONOMIST: Lego

Of course, Product Manager roles have been in industry ever since the rise of consumer electronics products like transistor radios or television sets.

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"Today, if you want to add a new server, many sets of hands are involved, " says Bert Armijo, 3tera's vice president of product management.

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When a publisher uploads its content on to one of the company's computers, it sets the price and defines, for example, whether the product can also be saved or printed by any user who wants to buy the right to look at it.

ECONOMIST: Digital rights and wrongs