Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. CompuServe, (CompuServe Information Service, also known by its acronym CIS), was the first major commercial online service in the United States. It dominated the field during the 1980s and remained a major player through the mid-1990s, when it was sidelined by the rise of information services such as AOL that charged monthly subscriptions rather than hourly rates. Since the purchase of CompuServe''s Information Services Division by AOL, the CompuServe Information Service has operated as an online service provider and an Internet service provider. The original CompuServe Information Service, later rebranded as CompuServe Classic, was shut down July 1, 2009. The newer version of the service, CompuServe 2000, continues to operate.