This document discusses how social networking sites like Facebook, Twitter, YouTube, and Flickr can help organizations with communication, recruiting, and retention. It provides examples of how the Marine Corps League Detachment 1155 uses social media by creating a Facebook page and group, tweeting from their Twitter account, and posting pictures on Flickr to share information about events and recruit donations. It offers tips on setting up pages and groups on Facebook, creating events, ads, and tracking engagement and progress.