Voice Threads

VoiceThread
With VoiceThread, group conversations are collected and shared in one place from anywhere in the world. All with no software to install.
A VoiceThread is a collaborative, multimedia slide show that holds images, documents, and videos and allows people to navigate pages and leave comments in 5 ways - using voice (with a mic or telephone), text, audio file, or video (via a webcam). Share a VoiceThread with friends, students, and colleagues for them to record comments too.
Users can doodle while commenting, use multiple identities, and pick which comments are shown through moderation. VoiceThreads can even be embedded to show and receive comments on other websites and exported to MP3 players or DVDs to play as archival movies.
I think voice threads would be a good thing to emplement into the classroom. I like how it allows people to leave a message five different ways. I would not use it in the classroom untill i got more comfortable using it.