VoiceThread

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. Voicethread has a dedicated education community now as well. A really good example which uses art as a theme can be viewed here:


and an English storytelling project here....

You do need an account to use it. Particularly useful for class based activities- you can setup members of your class as sub-users. Only one sign in, but everyone in the class has a working identity they can switch to which tags their work.
Even better it has mic. setting options for both mac and PC!
http://voicethread.com/#home