Great post. In particular, I think that people really underestimate the power of email marketing. Enabling site visitors to subscribe to your marketing lists is crucial and builds a substantial customer base for future specials, promotions, news etc. This is just as important as SEO. One more thing that I would suggest is using social networking, which is increasing dramatically. Having a Twitter or Facebook account displaying information from your blog's RSS feed incurs little work and is a great way to stay in touch with a wider range of potential customers.