VoiceThread – a new way to teach and learn?

I came across this amazingly simple web tool today that could be used for all kinds of cool learning experiences at school. We know that learning and making meaning of things is a social endeavor. Imagine a student posting an image of a paragraph he wrote. Then each student in his group or class could log on and read the paragraph, making comments on it (e.g. “You capitalized all your proper nouns – good job!” or “Try adding another supporting statement.”). A teacher could upload an image of a picture or object and have students write or record a paragraph or sentence about the image or object. The beauty of this is that students can access it more than once, can interact with school assignments at home, and can involve parents in their learning as well. What do you think? What other ways could VoiceThread be used to teach our standards at school?