This document outlines a presentation about geo-tagging with the BuddyPress plugin. It discusses how BuddyPress allows users to redefine the social layer by customizing features like profiles, groups, and activity streams. Examples are given of how BuddyPress has been used to build social networking sites like Foursquare. The document also lists several plugins that extend BuddyPress's functionality, such as geo-tagging posts, managing documents and photos, and integrating with external networks like Facebook and Twitter.