Badoo, like Facebook but for sex, has 130 million users

Sign up for an account and make sure you get tested regularly, as Badoo crosses 130 million worldwide users (1 million in the UK) to become the fourth largest social network on the planet.

This isn't a network of rekindling friendships with people from your past and interacting with those who share similar interests.  Instead, we have a network based entirely on generating all new friendships with people.  As the enticing line of promotional copy says: "Boost your social life.  Chat, flirt, meet up and have fun!"