The document discusses using social media for trainers to increase engagement and retention. It provides examples of tools that can be used before, during, and after training to gauge audiences, develop materials, collaborate, live stream, produce content, and evaluate. These include Google Forms, Survey Monkey, Delicious, StumbleUpon, Google Reader, SlideShare, Twitter, Facebook, LinkedIn, Google Docs, Google Wave, Wikis, Ustream.tv, Hootsuite, Youtube, Flickr, TwapperKeeper, and blogs. The goal is to apply learning immediately, engage participants, and share content to promote the training.