So you write content constantly and build links like you would on a regular website
the only thing that you can really do to improve your blogs traffic besides these two things is jumping into the social world. Networking is a way for you to meet new people within your niche both bloggers and traffic alike. As you find more and more people you will see your traffic from these sources go up every time you write a post. It is much easier to keep a reader that you also have as a friend on facebook or follower on twitter. You should also be concentrating your efforts on social bookmarking and making friends on digg, technorati, stumble upon, and the rest. Pick the social websites carefully making sure not to go with quantity over quality. You should be able to actually participate in the social community once a day and still have time to write content and market your blog. Only do what you think you can do not go overboard and burn yourself out.