Card Sort - A method for testing the structure of a web site or application using index cards, each representing an individual concept or web page. Participants arrange the cards in an order or structure that makes sense to them.

Category Membership Expectation -A method that tests the participants' understanding of various categories including what they think should be in each category and what the category should be named.

Cognitive Walkthrough - Designers of the web site or product try to predict users' movements and actions by doing actual tasks themselves.

Focus Groups - A method that involves a small group of individuals discussing their opinions and ideas about a defined topic or set of topics.

Questionnaire - A set of questions designed to collect responses and opinions from users on a topic. 

Site Usage Logs - A method of using web server (httpd) logs to track users' movements on a web site. This is especially useful for determining patterns of movement and use.