World Usability Day 2007 kicked off the year with a special session at the Usability Professionals' Association conference. The focus for World Usability Day (WUD) is healthcare. Healthcare usability affects every individual throughout his or her entire life. Every day, issues of medical illnesses and diseases, health insurance, nutrition, prescriptions and supplements, healthcare professionals and medical facilities affect how we experience our world and the quality of our life. Our daily "user experience" is critically affected by healthcare and the usability of all aspects of healthcare. The WUD 2007 kickoff event was attended by close to 100 people, many of whom have participated in the previous 3 World Usability Day events. Theo Mandel, Ph.D., the healthcare chairman for WUD 2007, presented a brief introduction followed by four case studies of successes in healthcare usability. View introduction slides Over 20 sponsors have signed up for World Usability Day 2007. Sponsors to date include: Apogee, Axure Software Solutions, Constant Contact, Dell, Different, Eventbrite, FatDUX, Google, Intuit, Microsoft User Research, Mitsui-Links, Ovo Studios, PayPal, SirValuse, Techsmith, Texas Tech University, VKI Studios, Usability.ch, and Weber Shandwick Worldwide. To kick off WUD 2007's focus on healthcare, four case studies were presented: