What I've learned in class, as shown in VoiceThread

http://voicethread.com/share/1272072/

VoiceThread is a very interesting piece of software. I would say that it may have a great deal of application in instructional fields, especially if people keep insisting on using Powerpoint for everything. I can recall from my days managing a school lab that often people would come in to 'print out the notes' -- and they'd end up printing out powerpoint files.

Anyway, I don't think there's much call for a full writeup, but one application that comes to mind is enabling students to 'raise their hands' and ask questions, either through voice or text (text might work better in general on the student's end) so that they can be answered by the teacher, thus, in a sense, preserving the inquiries and what lead to that particular answer or development of the subject.