“User researchers frequently use card sorting to understand how users perceive the structure of a Web site and the ideal way for them to navigate through the site. Usually card sorting starts with doing an inventory of a Web site’s content, then creating a card for each stand-alone piece of content. Researchers recruit participants for a card sort from a Web site’s target audience, then ask them to group the cards into categories that make sense to them.” (Shanshan Ma ~ UXmatters)