With 1.44 billion monthly active users on Facebook, it's next to impossible for businesses of any size to ignore the impact an active Facebook page can have on their business. This tool is free (except for the manpower you put into it, any equipment or software you use to support it, or any advertising budget you spend on it) so for many businesses it's a no-brainer and could even come across strange to consumers if not utilized. With that said, it's important to focus on the type of content you post and how you interact with your followers on Facebook as this can very easily make or break the opportunities here. Managing a public Facebook page is much different than managing a private or even public personal Facebook profile and there's so much more at stake.
If your business is not yet on Facebook, first learn How to Set Up a Facebook Page for Business from Social Media Examiner. And if your business is already on Facebook, read through these common issues with Facebook pages and learn to correct any issues that could be holding your business Facebook page back from true success.