What's the real value in Facebook groups?

A lot of the communication online from people who have something to say is one to many.

There is a way to encourage people to do more peer to peer communication via a well managed Facebook group about a topic.

A key benefit of using a group is that the burdensome part of the communication can be shared. You can leverage the people most interested in your topic to help you reach and inform other people about what you are trying to say.