I like that it lets me add my own information, rather than having everything filled in by someone else (which can be helpful). It's user friendly - there are no technical hurdles! Everything about this program has been great so far; however we do have some issues with how quickly our data syncs up after adding an event through their website or mobile app vs when using Outlook Calendar Sync feature from other apps/websites such as Google Apps / Exchange etc.. This makes sense because they're both different products but maybe sync times could improve? Just another way you don't need multiple programs if your looking at sharing calendars between people who may not use all 3 options above mentioned :D Also very easy integration into Gmail which was also something i liked since most everyone uses gmail now days instead of outlook :).