One fun way to build interest for your Facebook page is to run a cover photo contest. But running one involves adhering to some pretty specific rules that Facebook sets forth for contests in general and photos in particular. So I have written a step-by-step guide to setting up a cover photo contest, using a real contest as an example. The contest guide reviews a variety of third-party managers that can help with running a Facebook contest. I specifically recommend Strutta as a high-quality service.