Youth and Mobile Phones in Latin America

I came across this article from Business Wire, "Mobile Marketers Get Warmed Up: Latin America's Wireless Content Market Set to Samba - Region's Rapid Subscriber Growth, New Network & Handset Technologies and Cross Network Connectivity Make Mobile Services Market Ripe for Brands Seeking Direct Connection to Young Latin American Consumers"  The article is available here.  So, how active are youth in Latin America with mobile phones?  How do you facilitate their activity in politics?  If they're buying ringtones, how does politics and social issues reach the masses?