MySpace is a social networking website offering an interactive, user-submitted network of friends, personal profiles, blogs, groups, photos, music and videos. MySpace also features an internal search engine and an internal e-mail system. It is headquartered in Santa Monica, California, USA, while its parent company is headquartered in New York City. According to Alexa Internet, it is currently the world's fourth most popular English-language website, the sixth most popular website in any language, and the third most popular website in the United States, though it has topped the chart on various weeks (note it is possible that other websites have a greater number of unique visitors).

The service has gradually gained more popularity than similar websites to achieve nearly 80 percent of visits to online social networking websites. It has become an increasingly influential part of contemporary popular culture, especially in English speaking countries. The company employs 300 staff, is owned by News Corporation, and does not disclose revenues or profits separately from News Corporation. With the 100 millionth account being created on August 9, 2006 and a news story claiming 106 million accounts on September 8, 2006, the site reportedly attracts new registrations at a rate of 230,000 per day.