The document discusses several online tools that can be used for social bookmarking, organizing resources, collaboration between teachers and students, and backchannel communication. It describes the functionality of Diigo for saving bookmarks, highlights and notes online; LiveBinders for organizing websites, images, videos and documents; Webspiration Classroom for visual learning, brainstorming and outlining; TodaysMeet for conducting backchannel chats during meetings and presentations; and Dropbox for easily sharing files between teachers and students.