Latin America is the fastest-growing region in the world in terms of Internet expansion. The region's audience grew 23 percent in the past year and now represents 8 percent of the global Internet audience, according to ComScore (June 2010). Social Networking is the most popular category in Latin America after Search. At a business level, some companies in the region (such as Iusacell , Telcel , BestBuy México or Dell ) have been using Twitter as a communications tool and to advertise promotions...