Even with the worldwide web at their fingertips, most people stay within their online comfort zones. All this month, Ethan Zuckerman, co-founder of Global Voices Online, explores the way digital media can connect people to a wider range of voices. Today’s topic: the Arabic-English website Meedan.net and other sites that cross language barriers. Plus, 2 Million Minutes: A Documentary Film On Global Education. And, your advice for a retiring Lou Dobbs.