You could get your blog indexd by social bookmarking it to the likes of Digg and Reddit, the search engines regularly crawl these sites, so the more your site is on them the more their crawlers will equally index your site
As compared to other off-page promotional works, blog are much faster cached in the search engines. Its better to make the blog interesting by writing the relevant content and to allow comments asking a feedback for your work and their valuable suggestions in that..!!