Great site, really simple to use but with lots of possiblities (obviously uploading pictures of pets not being one of them!).
Similar to voicethread but with less setting up involved. The basic idea is to upload a photograph and have children record their voice commenting on the picture. Although you need an email address to set up an account, you can create a username for your class.
What's really good I think is that your 'fotobabbles' can be kept private so using photos of the children wouldn't be an issue. I could see younger children using photographs of a trip they went on or activity they took part in and record their recount of events. It could also be used as a stimulus for writing.
Once children have created and saved their 'fotobabble' it could be embedded into you website/learning platform. I could see our older children using them on their e-portfolios to keep a record of things they've done or just for fun.
I'm not going to embed a demo of this one as I couldn't bear the thought of having to listen to my own voice! Similar results could be achieved with Voicethread or Photostory but I though this was just so simple to use with lots of possibilities.