I think it'd be cool if we had this, because it could tell which people were online/offline/busy. Maybe add Busy, AFK etc or if that is too much we could simply do online/offline/busy. It could be that the user can edit their status section and use any word to tell what they're doing. Or if you can make it automatic, you could do that if a user is on a different tab but has a DB tab, the user would be busy. If he is doing something on DB, he would be online. No DB tab, then offline. If the person turned the laptop/computer/phone/whatever and I think you get it off but he still had the tab on, he would be offline.
Please tell me what you think.