Designing a website can be one of the most challenging areas of SEO that you come across when creating and building a website. Many people add lots of images to pages which are actually irrelevant as they forget that the one of the factors most useful to SEO is how the site actually works. If it is easy for customers to find what they are looking for on a website and if the site bears relevance of whatever specification to the search engines are two other useful factors to keep in mind.