So I used voicethread a few years back in my classroom and wondered if I could access it. I returned to the site and was pleasantly surprised to find my account still there. Where would it have gone? The more amazing thing was I had remembered my login and password! Here is one of the thread that I created with my students. This was an Empowering Writers lesson. The children created the giants then wrote about it. I used a microphone to record each child reading their piece of work.
It was very easy to use. The children and their parents loved seeing and hearing their voices.
I think the best component to voicethread is the ability for others to leave comments for the students and their teacher.