VoiceThread defines itself as "a collaborative, multimedia slide show that holds images, documents, and videos and allows people to navigate slides and leave comments in 5 ways - using voice (with a mic or telephone), text, audio file, or video (via a webcam)" Slide shows created on VoiceThread can be shared with others. In addition, viewers can be invited to comment on slideshows. The free account allows you to create up to 5 VoiceThreads.
