Quick a dirty suggestions from an experienced blogger:

- Migrate to WordPress.org and/or get a nice looking theme + logo design

- Add a photo to compliment each post

- Add sub-headers and bold important thoughts

- Start a Twitter profile to promote posts and additionally submit posts to Stumble, Mixx, Sphinn, HN, Digg, Facebook, etc.

- Prominently feature email newsletter and RSS subscription options

- Add a short biography of yourself below each post + create an About page and Contact page

- Implement links to related posts to increase stickiness (Wibiya.com blog toolbar can help here as well)

- Utilize your blog footer to feature additional content