L'intero articolo: http://www.lsdi.it/2008/05/17/i-blog-si-trasformano-in-un-grande-affare-in-usa/
Sito molto interessante:

_Market Research on E-Business and Online Marketing
_Objective Analysis of Internet Market Trends
_Data from Over 3,000 Worldwide Sources
Link: http://www.emarketer.com/
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