When is Usability More Important than SEO?
Stoney DeGeyter has written over at Search Engine Guide that not every client needs SEO. Sometimes the usability needs to be tackled first. Using an analogy, he explains that your website is like a restaurant. If the restaurant isn't accessible, people might not hang around. He drives the point home with:
By fixing usability issues you can sell more while without having to spend a lot of money always trying to bring in a lot of new traffic. A little goes a long way. Once you are able to increase your conversion rates, every dollar you spend on marketing and SEO will be more effective and have a much bigger impact on your profit margins.
From Internet Marketing and Online Annonsering