About four hours ago, I arrived at the Pittsburgh airport, ready for a weekend of education, networking, and activism known as Netroots Nation 2009.  Begun just a few years ago under the moniker Yearly Kos, Netroots Nation is now the premiere annual convention in the country for online progressive activism.  It's an event that has given everyday people, young and old, the opportunity to make their voices heard.  Because of the success of the organizing model that has transformed American politics in the last few years, including the election of President Barack Obama, a guy l