For a constant flow of new clients the lifeline is important. Learn about the lifeline for your business, How to build it and how do you keep this alive.
Use lists in Facebook, make custom lists, add friends to the Close friends list, or to the acquaintances to have more control of what you see in your news feed.
Facebook recently changes how you can see the people that like your Facebook business page. Here is a clear description how you can find the people that like your page.