VoiceThread – Group Conversations Around Images, Docs and Videos
http://voicethread.com/

A VoiceThread is an online media album that can hold essentially any type of media (images, documents and videos) and allows people to make comments in 5 different ways – using voice (with a microphone or telephone), text, audio file, or video (with a webcam) – and share them with anyone they wish. They can even be exported to an Archival Movie for offline use on a DVD or video-enabled MP3 player. A VoiceThread allows group conversations to be collected and shared in one place, from anywhere in the world. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.