I agree with Registernuke. But I will suggest something else. Hey our target is to bring more audience and getting more likes on this page. Lets forget the tecnicalities and rocket science for some time. Will talk about basics. have you ever thought why you like something? you like something because it attracts your attention. You find some similarity in the nature of that object. This nature can be its presentation and the way it or that object is displayed. You feel a connection. Sometime you like because you think it is informative and will place you a level ahead to where you are right now.
I know it seems a bit philosophical, but the digital marketing is first marketing being digital is just a medium and not the nature.
I will suggest you to bring more relevant infographic post and videos. And all those relevant posts that will attract the attention of your audience. You can run like campaigns and post promotion. You can use the infographics with approved dimension as images in the campaigns. Hope it works...