Add CATEGORY and STATUS elements to Events as specified in the ICS specification RFC 5545 (and updates)
Following the ICS spec is important to all those users that sync between devices. Some of the suggestions are misinterpreting the concept of CATEGORY and STATUS as compared to the ICS definitions. FreeBusy is NOT a CATEGORY. It is a separately defined element of an Event. Most other extensively used calendaring software based on ICS make significant use of CATEGORY and STATUS elements.