In this edge Facebook is best for internet marketing for local businesses. It is an important tool for generating engagement among current, targeted and potential customers. If a fan person of your business page (not your personal profile on Facebook, but a real business page) sees and shares a status update on their wall, their friends are going to check it out if they are online on Facebook or Twitter.
Everyone knows the value of a personal recommendation in real life. You know today, Facebook is where the vast majority of personal recommendations are happening between friends, classmates, associates, and family members. You have to be there, and you have to do it right to get traffic and new customers.