This document summarizes an Emergency 2.0 Wiki that aims to help build resilient communities that can use social media for emergency communications. The wiki's goals are to provide a free global resource with guidelines for using social media in all phases of emergency management. It seeks to engage professionals from different sectors including emergency agencies, government, education, non-profits, business and media. The document encourages people to get involved by checking out the wiki, following it on social media, contributing content and helping establish partnerships and communications groups.