While SEO makes your site friendly for search engines, usability makes your site friendly for human beings. Usability encompasses a number of concepts including page design, navigation menus and making easy-to-read pages. The guidelines in the following articles will help you create a website both humans AND search engines will love.
Web Content Guidelines – Creating content for the web is different from creating content for magazines. Learn how to make an easy-to-skim page for your visitors
Handling Page-not-found (404) Errors – Learn what 404 errors are, why they happen, and how you can help visitors recover from them