New media are forms of media that are computational and rely on computers for redistribution. Some examples of new media are computer animations, computer games, human-computer interfaces, interactive computer installations, websites, and virtual worlds. New media are often contrasted to "old media", such as television, radio, and print media, although scholars in communication and media studies have criticized inflexible distinctions based on oldness and novelty. New media does not include analog broadcast television programs, feature films, magazines, or books – unless they contain technologies that enable digital generative or interactive processes. Wikipedia, an online encyclopedia, is a good example of new media, combining Internet accessible digital text, images and video with web-links, creative participation of contributors, interactive feedback of users and formation of a participant community of editors and donors for the benefit of non-community readers. Social media or social networking services, such as Facebook and Twitter, are another example of new media in which most users are also participants.