A few of us have been microblogging about the SoTL insitute on Twitter, using hashtag #bioscholar. You can follow the conversation on Twitter by searching for "#bioscholar" or you can access the archive of all the tweets by going to http://twapperkeeper.com/bioscholar/
By the way, here is a blog on the professional uses of Twitter: http://cit.duke.edu/blog/2009/07/13/14-tweets/