The earliest paper in backchanneling. I've seen the quieter students come out. Also, having Google Jockeys is essential to the process. Also, a way to archive the channel and sort of agreed upon use for the backchannel is helpful.
Angela Stockman has excellent ponderings and points about the issues of supporting face to face communities with online communities and why many resist such an effort. Great thoughts to consider for those who are working to move towards this.
Sue waters wants us to share our great tweets- how do you do this? Tag it #gr8t -- do one a day - your favorite tweet and tag it that way.
The tricky thing is how it will handle it as when I reply to give another credit for the #gr8t tweet, how will THEY get credit? Just not sure, but anyway, her tips for joining in the twitter conversation are good ones.