I like that it is easy to use, has many features including video embedding which makes my job easier as well! It's also very cheap compared with other platforms out there (like Instagram).
They have some great integrations such as Facebook Live so you can easily share your content across all of their networks. There are no downsides at this point in time but if they add more user friendly options then I'm sure people will start using them even more than now because everyone loves free things right? :) My team uses it every day - we post about our work life from different angles; posts related to business development/marketing, product updates etc.