The document discusses best practices for using a backchannel during presentations including: 1) Providing netiquette guidelines such as answering questions with "@" to avoid confusion, keeping discussions on topic, and being upfront about self-promotion. 2) Suggestions for how to use a backchannel including having a moderator to share questions with presenters and providing an archive of the discussion. 3) Various tools that can be used for backchannel discussions including chat platforms and social networking sites.