Learn about the user studies Georgia State University Library conducted to guide the included features on its library's mobile website, and gain tips for engaging in user-centric design of your own mobile site. Poster presentation included data used to inform the mobile site content (drawn from a user survey of undergraduates, graduates, and faculty on the desired features for a mobile library site as well as Google analytics), graphical shots of the mobile site, marketing of the mobile site, and post-development user study data to inform any redesign/adaptations of the mobile site.