It's a blatent idea theft from facebook I know, but I thought it would be pretty cool to have a "status" setting, somewhere to type in your current activity, mood, or whatever the hell you wanted (maybe I should add a naughty-word filter..)
Load the live window (or reload if already open) and you'll see a new input at top right, type something into it and press 'Go!', your status will appear under your name in the on-line list To clear it you just enter nothing and press 'Go!'.
If it becomes popular I can add the status message into forum or profile pages too.
Or, if it becomes annoying I can pull it altogether.
It's limited to 40chars so that it doesn't get too unwieldy