This is really cool, and I can think of about 100 uses immediately, from running an improvised presentation to providing a way for the front-channel and backchannel to interact automatically.
projeqted – dynamic presentations for the classroom
Real-time presentations with dynamic slides. Create a presentation once, and it updates everywhere instantaneously. With Projeqt, students can access, share, create and review their work from anywhere, at anytime. Give comments and feedback and track student progress; your Projeqts live in real-time and can be shared for everyone to see. Break away from the exhausting effects of the one-dimensional PowerPoint presentation and create a social and interactive learning experience.