???????????960???
???? Forrester Research ??,??????????? 960 ???,?? 30%? 270 ????????????,????????????????
? 2008 ?,?????,?????????????? 2,300 ???,????????????? Wal-Mart ???????,???????????? 10% ???
Forrester ?,??????????????????????????????,???????????? 10% ???
??????????????????????????,????????????? 10%,??????????????????????? 4%?
?????,??????????,??????????????????,????????,??????????????????????? 1.5%,??????? 1.3%?(AFP)

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