The Internet has become an integral part of many people's work and personal lives. The number of people online daily has nearly doubled over the past decade, according to research conducted by the Pew Internet and American Life Project. While internet addiction as a specific disorder was being debated for inclusion in the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders as of 2010, treatment centers already exist throughout the U.S. and abroad, including China, Taiwan and Korea.