In my undergrad studies in college, Facebook groups were commonly used as a way to create light weight shared group pages for study groups, projects, etc. I could see this being useful in the business world working in the same way.
Specifically, most of the time someone would make a group for a study group and then everyone would use the group page to post meeting times, relevant files, etc. Group chats were used for quick communication, etc.
The benefit this has over something like Slack is that it is something everyone is used to and comfortable with already. People, for the most part, understand what a group page is and how to post on one. People get how to send an IM or start a group chat. There is virtually no learning curve.
Specifically, most of the time someone would make a group for a study group and then everyone would use the group page to post meeting times, relevant files, etc. Group chats were used for quick communication, etc.
The benefit this has over something like Slack is that it is something everyone is used to and comfortable with already. People, for the most part, understand what a group page is and how to post on one. People get how to send an IM or start a group chat. There is virtually no learning curve.