We put your blog post's title in the page title and the URL itself to help with SEO, but outside of that, there isn't much we can do. Your best SEO will come from external websites linking to your blog post. You might want to read this blog post, it should help: http://doodlekit.com/blog/entry/109261/free-website-seo-and-traffic-for-beginners
With regular blogging [and the selection of good post headings] you will get effective results from Google et al. It took my website about 3 - 6 months after Indexing with Google to achieve these results from my blog posts.