In spite of enjoying playing with Ubuntu on the Chromebook, I find myself using Chrome OS all the time instead. I really like Aura as a UI, and with the terminal windows (in developer mode) I get ssh in a convenient format. Since pretty much all I use these days is a web browser and SSH to my workstation for everything else.
With one exception. There's no good web IRC client yet, and I really don't like using tty-based clients like irssi.
There's a startup called IRCCloud at http://irccloud.com/
, that looks to be the perfect solution for this. Unfortunately, their invite wait list seems to be long. :(