I saw a demo of a startup weekend app built on Twilio. Before it started, a box was passed around the room and people were asked to put their business cards in

I saw a demo of a startup weekend app built on Twilio. Before it started, a box was passed around the room and people were asked to put their business cards in it. Then, while one guy ran the demo, another was putting all the phone numbers into the app. The guy at the podium clicks 'submit' and 5 seconds later all the phones in the room start ringing. It was an awesome effect. Congrats to the Twilio team on an awesome product, and I can't wait to see where it goes.