Facebook is an art it self.
Make sure you only have friends that are active and have an interest to your niche.
Don't like every thing with your fan page. Only like pages in your niche and share content your customer will enjoy.
And most of all get a welcome tab for your fan page. Its a page visitors will see when they first see your page the first time. Great way to tell them to like and grab the free gift you should be giving away.
If you understand Facebook the traffic could be endless.