SDC or Swingers Date Club is currently one of the world's largest international communities for swingers. Established in 1999, they have been since then the number one provider of pleasure, fun, and excitement to couples and single people. Their goal is to allow couples (and singles as well) swing and explore their erotic fantasies through their different events, travels, parties, and other features.
The site has a huge database with over 3 million members worldwide. It is available in many countries, including Australia, but most of its members are from the United States and the Netherlands. It operates globally but its main office is located in the Netherlands.