I like that it allows me to create my own groups, so I can have different channels for each of them. It also has an API which makes integration with other tools much easier. The UI could be better designed - some things are difficult to find or hard to understand at first glance (like how to delete a group). There seems to be no way to search groups by keywords, but you must know what they're called in order to add them to your dashboard.
If you want to use this tool as part of your recruitment