always keep posting and update your post, make them seo with make high keyword density. custom a permalink url can be help you to. beside onsite you can use offsite seo. you can use bookmarking, blog commenting, forum and directory listing. CMIIW
Are you looking for link building methods or overall SEO? Remember Content is king keep adding fresh content. You can get back links through submission into DIgg, Reddit, etc Join up some forums create your presence and keep searching maybe you can add something valuable to the forum. When somebody ask a question you might say hey I know the answer to this question. So, joining communities is the best way to get back links, but do not just go and start sharing links be a regular member with good reputation.