Include data in blog posts. It makes the post more interesting and informative to read. It makes people stay longer on your pages and even share your content.
Keep your posts simple! Do not try to impress anyone. be yourself! Visit other blogs which might interest you, take part in conversations or simply put your two cents for others to read and follow you back to your blog.
Never mess your blog with too much of Adsense ads. It gives a confusing look to the blog.