Based on in-person, task-based usability testing and interviews, the authors' library Web site was recently overhauled in order to improve user experience. This led to the authors' interest in additional usability testing methods and test environments that would most closely fit their library's goals and situation. The appeal of card sorting methods became evident: learning more than users' points of confusion interacting with the site, but learning users' preferences for grouping pages or concepts and naming various library links. The appeal of the online venue for card sorting was first that testing could incorporate input from a larger base of users than in-person testing alone, and, additionally, that testing could include the university's online-only student population.