Most SEOs and their companies / clients will automatically focus on driving large volumes by optimizing their site for relevant keywords with the highest search frequency, when this really isn’t usually the best approach.
http://searchengineland.com/analytics-ppc-seo-so-happy-together-30510
Traditional SEO has centered around moving one web site higher in the search results. The latest forms of SEO such as SEO Monopoly center on moving multiple sites higher in the search results.