Add your personality - If you are writing on a particular topic, there are a number of people who will be writing on the same topic. So you need to add that specialty to your blog to make it look different and to allow your readers to take away something that the others are not offering.
Incorporate gadgets and widgets on your blogs so that people who drop by your blog can keep a tab on what you will be writing next.
Share your personal experiences on your blog occasionally. It makes your posts more real and helps your readers connect with you.