If the hashtag in use remains the same during the conference, these two links can help you follow along via Twitter:
In context, relatively speaking, on Twitter Search: http://search.twitter.com/search?q=%23cil2009
RSS feed to pipe into your reader: http://search.twitter.com/search.atom?q=%23cil2009
Following CIL
Experimenting using an aggregator that was discussed on Web4Lib to follow Computers in Libraries. http://www.fcpl.info