This Internet pioneer is still serving America -- and other countries -- online. AOL is a leading Web portal, serving users with an array of news, sports, and information, including games, music, and video, as well as e-mail, AIM instant messaging, and interactive services. Its advertising-supported content business, operating through its Global Web Services arm, includes three core units: Platform-A (digital advertising), MediaGlow (digital publishing), and AOL Ventures (new projects). In addition, the company still offers online access services to less than 7 million subscribers through its Access Services business. AOL is a subsidiary of media behemoth Time Warner, which is spinning off the company.