Write an article about your niche, using a conversational style as if you were explaining what you are writing if talking to somebody face to face - just as I am doing now in fact. Offer interesting information that anybody involved or interested in your niche would find useful. It doesn't have to be earth-shattering news, but what you write must be factual and show that you have a firm grasp of your subject. You want people to continue reading once they have started.