The top line of the graphic features some extra stuff people in black.

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But Mr. Eggert tossed in all manner of extra stuff.

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Each subscriber is then tempted to buy extra stuff.

ECONOMIST: Face value

For frequent golf travelers who like to stuff extra clothes and accessories into their bags to minimize extra bag fees, pricier heavy-duty expandable travel bags like those made by ClubGlove are more useful.

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Since consumers obtain less satisfaction from buying more of the same stuff, the rewards dropped for each extra purchase they made, from 120 points for the first unit to 80 for the second and so on up to a maximum of four purchases per round.

ECONOMIST: Economics focus

And, of course, the delay might rankle customers whose stuff was sitting on the tracks for an extra day.

FORBES: On The Cover/Top Stories

The government has also given universities lots more money, ending a long-standing tendency to stuff more students into lecture halls without providing extra cash.

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China, India and others began buying extra oil for fear they might get caught short of the stuff, which would hurt their economies.

FORBES: Fact and Comment

As retailers now have applied extra checks on these items, the bad guys have turned their attention to innocuous stuff like printer cartridges.

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The Louisville, Kentucky-area residents taste several versions of extra-crispy Buffalo chicken breasts, corn on the cob and apple pie, stuff KFC may add to the menu in its 33, 000 restaurants worldwide.

FORBES: Happier meals