@barcampnash - the official Twitter account of BarCamp Nashville. Follow for updates and announcements.
@bcnchat - the official Twitter chat relay for BarCamp Nashville. Whatever you '@' or 'd' gets retweeted. Follow to converse with other BarCampers.
#bcn09 - the official hashtag of BarCamp Nashville 2009. Tag your BarCamp tweets and search to see what others are saying about BarCamp.
Plus, each session will have it's own Twitter hashtag this year so you can live tweet questions and commentary during the session.