Microsoft today announced that they have added a new feature to Office Online real-time co-authoring feature makes it easy for you to work together with others on a document. Document chat is now available when collaborating with others in real-time in Word and PowerPoint. Simply click the Chat button to begin chatting with everyone working in the document. Continue to chat with those same people after leaving the document via Skype on your desktop or phone. Know when your team is working on the document and chime in.