Audience comments on lecture via SMS

A few days ago I attended an event on Generation Y, organized by my alumni association. As an experiment, they had invited people from a company called citylive with a cool technology for conferences. You see two screens above the speaker's head: one is ye old powerpoint (ok, shown via SlideShare instead of MS Office, but still a presentation), and the other screen shows live comments from the audience and answers to questions from the panel or speaker to that audience. The audience can react via an SMS or a mobile application. It really makes the whole presentation thing two-ways, interactive and a lot more fun. Oh, by the way, the comments are filtered by a moderator :-) . People are still people.