I like that it's easy to use, has great features for scheduling content and managing posts with tags/categories etc., as well as analytics which is very useful! It can be expensive if you are running multiple sites or have large networks of users - but this isn't really an issue since SM only offers one plan (which includes all plans).
There aren't many tools out there specifically geared towards helping manage your brand across so many different platforms in such a way where they're easily accessible by everyone who needs them. This tool helps us keep our brands visible online while also being able to track results through their reporting system.