A wonderful trick is to find out what people look for on you blog. A good content is not one which is full of keywords, it is what users actually want. In order to promote your blog, look for the overall search trends. Find out what people are interested in these days related to your blog’s topic.
You can also keep an eye on what people are liking on your blog and what they are searching for. This can be done by installing a good plugin called “Search Meter“. This plugin show you a search dashboard in your wp backend showing the search on site for yesterdy, today and last week.
Install this plugin and analyze the search behaviour of visitors.
Get more info from Plugin’s homepage.