Back when Google Talk ran Gmail-based chats, a handy custom status window made sure all your colleagues and pals knew what you were up to. When Hangouts took over, the tool fell by the wayside. Well, now it's back. Hangouts in Gmail allows you to deliver that info once more, just like you would on AIM or Facebook, complete with the appropriate (or inappropriate) emoji should the need arise. Of course, if you're looking to let folks know when you're busy, you'll need to make sure you've made the switch to the "new Hangouts" first.