I think you should continuously write good and interesting content on your blog. Apart from this there are several other ways to increase traffic to your blog like:
1. Participate in forums and try to help people. This could be a great traffic attractor.
2. Submit your site to social bookmarking sites.
3. Submit your site to active directories.
4. Visit various sites and don't forget to leave comments on them.
5. Try to swap links or buy links from other blogs.
6. If you want a big traffic for short term and you have budget than you can trying purchasing a review about your site from some big bloggers like johnchow, etc. (but beware this could have a reverse action as well)..
7. Stumble exchanges are a great way to increase traffic to your blog..
