Once every year since 2005, the world is now celebrating what we call World Usability Day. This day long festival is done to celebrate and promote the value of usability engineering, user-centered design, and the responsibility of the user to ask for things that will work better.In short, World Usability Day is for products that make life easier for products that are useful, user friendly and helps ascend life for the better. The celebration is sponsored by the Usability Professionals' Association, a special organization that according to them is dedicated to "those who promote and advance the development of usable products, reaching out to people who act as advocates for usability and the user experience."
Read more: World Usability Day 2008 [click]