Last month, the Virgin Mobile FreeFest brought tens of thousands of people out to Merriweather Post Pavilion in Columbia, Maryland, to help end youth homelessness. According to the Virgin Mobile-sponsored Re*Generation, up to two million young people face homelessness each year. Since 2006, over $3 million has been invested in this program. Last week, you may have read Arianna Huffington's blog post on how drastically she was affected by a New York Times story about the rapid increase i