The document discusses the changing learning ecosystem with the rise of many-to-many media. It highlights different types of many-to-many media like video sharing sites, podcasting, live video streaming, and social media. It encourages the reader to try out various media platforms like YouTube, Twitter, Viddler, Vimeo, uStream, Stickam, FriendFeed, Facebook, Myspace, podcasting sites and more to participate in this new learning ecosystem.