I like that it's easy for me as an admin/business owner - if you are familiar at all-to keep up wtih my workflow because there is no way of tracking time spent or even just progress made towards projects without having multiple tabs open (which can be distracting).
It also has been very helpful when we have had issues getting our team members together via email during busy times! We're able to see who was working where so they don't need access to internal emails while out & about doing their jobs but still get updates from us regarding deadlines etc.