As our friend backlinksrockstar said: Try to deliver good value to your audience, create relationships in facebook with people who are interested in your niche, interact with people on a daily basis, remember one thing. Content is the KING. People want good content, sticky pages, advice, suggestions, solutions, etc. If you can provide the solutions to their problems, or provide them with the right information to their needs, you are a winner, they will come back to your page for more interesting information. The only way you are going to achieve this is by delivering good quality content to them. I hope that helps a little bit.
A great way we have found to drive more traffic to your website through the use of Facebook is to offer a promotion or a giveaway as a Facebook application. Offering a promotion of a service or product will generate interest in what is being offered, and will drive more people to your website for follow-up information. This is also a good practice for branding efforts. If a potential customer has entered a promotion offered by your company, they are more likely to remember you the next time they are seeking the specific product or service you offer. - Ajax Union
Well I have fb page more than 500 likes but nobody show interest in normal content. You need something shocking or really horrible to attract people lol.