Additions and improvements were made throughout the website's first years. Digg v2 was released in July 2005, with a new interface by web design company silverorange. New features included a friends list, and the ability to "digg" a story without being redirected to a success page. One year later, as part of Digg v3, the website added specific categories for technology, science, world and business, videos, entertainment and gaming, as well as a "view all" section that merged all categories. Further interface adjustments were made in August 2007.