This tool is called VoiceThread and it can be found here http://voicethread.com/. This tool is sed to add notes and to record your voice and project pictures and write notes on the provided wallpaper. This tool is available for iOS devices as well as any web browser. It is considered a web 2.0 tool since it allows the user to create and share their voicethreads as well as subscribe to other creators who made their own
