Anyone know more details about SyncPad technology stack? The demo is over the same network which means... an iPad acts as server? But then it says all you need to do is connect to the internet... and then...? Long polling? Or socket?

The video demonstrates SyncPad's Enterprise edition. The consumer version runs using a custom Erlang message-queue server on EC2.

The Enterprise Edition of SyncPad allows you to run that same server on your own hardware or managed by SyncPad.

I see, so there is a SyncPad server program for enterprise use. Neat.

http://appush.com ?

Ug. Is that guy stuck in the early 90's? Hideous website! Cool programme though.

This would be incredible for online classrooms.

Do the iPad's only fetch data from a host iPad or can anyone with any of the iPads change the data that everyone is seeing?

In the version shown in the video anyone can interact with anyone, but during the conference the client will give to the attendants a read-only version (they will still be able to answer to the questions) so that the only in charge will be the presenter.