I know Twitter is desparately cool and widely used. But It seems fairly rubbish as a primary back-channel.
It's nice to be able to vaccum up tweets going out of the conference and not directly meant for people in the session/conference. But for direct feedback there are several chat alternatives which would be better, including IRC.
It's nice to be able to vaccum up tweets going out of the conference and not directly meant for people in the session/conference. But for direct feedback there are several chat alternatives which would be better, including IRC.