Erik Hersman Describes Ushahidibr NetSquared - NetSquaredbr Measuring Impact in Online Communities featuring panelists from Map This!, Ushahidi, and Greener One. This event was moderated by Jeff Hamaoui.This year's NetSquared Conference, a Mashup Challenge, brings together a unique mix of people from the public and private sectors to develop and release Mashups designed to provide deeper insight into the social issues affecting communities around the globe.