The document discusses the rise of live video streaming services from Ustream's early desktop streaming in 2008 to the mobile explosion of apps like Meerkat, Periscope, and Blab. It provides overviews of the features and user experiences of these different platforms, noting how services like Meerkat and Periscope integrated with Twitter's social graph while Blab allows multi-person video calls and embedded chat. Live streaming on platforms like Facebook, Instagram, and Snapchat is also discussed as contributing to the growing live video revolution.