I have been using Facebook for over 10 years now and I have learned so many lessons that I have helped boost my Facebook page from 10 likes to over $4,000 likes. The approach to boost Facebook is not as simple as we think sometimes, there is no magic formula. If you want to increase your likes you have to either: Work hard or pay Facebook to advertise your page. Let's talk about the hard approach. - First: You need to have a great content and topic to discuss about on your Facebook. Be effective, fun, and be on top of things - Second: Limit the length of all your publication. Remember, Facebook is not the New York Times Magazine or a blog, so publish your articles on your blog. If you want people to read your article, then post a link with a strong statement to lead your audience to the blog. - Third: You need to engage people - Fourth: Know what you are talking about and show evidence: picture or video can do. - Use Hootsuite.com: Hootsuite help you manage your social media platforms and write post that will be publish mathematically at your chosen date. The conversation continue even if you re not online. Hootsuite will post the message for you. Golden Rule: "Content is king, but engagement is queen and she rules the house".
As you said having a good content on your Facebook page and remain active to it will definitely work.
Suggest that you should invite more friend and inform your friends to invite and share the Facebook page with others so that you can able have more likes on your page.
I think Facebook likes and twitter followers are increasing your traffic. And now Google listed Social signals are also considering for SERP. If you are using this technique, you can easily promoting the Products in online. So Both are important.
Domain:Facebook.com Domain Age:16 years and 231 days Chek your info again. To gain more facebook likes I recommend to be creative, to post unique and fresh contant (content must be relevant to the fan page). Post no more then 2 ads per day.