The “About Us” page: Telling your potential customer who you are and what your brand stands for is imperative!
The “Contact Us” page: Letting your customer know you are available when they may need you.
A Sitemap: Allowing your user to get to any page within 2 clicks AND letting the Search Engines spider your site from a central “hub.”
“Why Buy from Us” page: Letting your customer know the explicit reasons they should buy from you as opposed the the competition. If you can’t quantify your business value relevant to the competition in 4 scentences, go answer these questions now - “Who are we? What do we do? How are we different? Why does it matter?“
The “Legal Information” page: This includes the “Terms and Conditions” and “Privacy Policies” as well as any other disclaimers you may need depending on your business model
The “Testimonial” page: If you cannot demonstrate the value of your product or service in the form of testimonials, then you may need to refine your business model
The strategy you are looking to achieve needs to be holistic in nature with all your weaknesses covered. Sure, this blog is about Search Engine Optimization in the new social medium. However, let’s not forget the sound marketing principles involved in actually converting a visitor into a paying customer.
Source : http://esotericlabs.com/search-engine-optimization-v2/pages-4-seo-conversion.htm