In fact, the more “likes” you have, the less content you post (by percent) organically reaches your audience. While pages up to 500,000 can reach anywhere from five to ten percent of their audience organically, those pages with over 500,000 reach between one and four percent.
Your business should always be site, blog, or app-based and social media used as a tool to drive traffic to it. Posting gaudy and obvious advertisements on your Facebook page for third party companies is a losing proposition.
Once on your site, there are a number of ways to build revenue, through tools such as Google Ad Sense, affiliate marketing, product mentions, merchandise sales, etc…