Usability, or User Experience, is the art of making your website simple, user-friendly and easy to use. Understanding your customer's online behavior gives you insight into what works and what doesn't. One of the best books on Usability is entitled Don't Make Me Think by Steve Krug. The title spells out the rule of thumb when designing websites – make it effortless for your users, and they will stay; make it difficult, and they will leave. Some of the most basic and proven usability tips include proper use of taglines, intuitive navigation, concise content, and strategic use of visuals. Avoid confusing features or functionality. Do links and buttons appear clickable, as they should? Does the website flow logically? Is it abundantly clear where important information can be found? If not, your website has not been designed for usability.