Driving more traffic to a website is just one part of search engine optimization (SEO).
When your consumers arrive at the site, you need to close the sale with high-quality content—which should be given just as much value as traffic.
The way to do this is to write informative pieces. Present the consumer with content that can help him make an informed choice about his/her purchase.
This type of content will not only strengthen your chances of finishing a sale, it also attracts links from authoritative and relevant sites.