This document discusses the evolution of digital marketing and citizen engagement in government, known as Gov 2.0. It describes how President Obama's 2008 campaign used digital marketing techniques and active listening to engage citizens. It then outlines how the Obama administration established open government initiatives and platforms like IdeaScale and Challenge.gov to solicit ideas and solutions from the public. Examples are given of how digital engagement tools have helped governments at all levels interact with constituents through email updates, mobile apps, and social media to share information and get feedback.