Mistakes to avoid
Leverage Facebook for strategic intelligence

Don't give credence to all the information published on Facebook, as this tool can also be used for disinformation purposes. You need to cross-check the information to give it the credit it deserves.

Don't hire a "trainee" community manager: this is a highly strategic task, and monitoring requires real organization and experience.

Don't forget to facilitate communications between the community manager and the company's other strategic entities: legal, public relations, marketing, sales, etc.