Chatroulette pairs random users for webcam-based conversations. Since its launch in 2009, the site now claims more than 2 million monthly users, making it the largest random online chat website worldwide. 

No sign up is needed to access the site, but permission needs to be granted for camera and microphone access and the minimum age needed is 18 years. However, as signing up is not needed, this is not always checked. The site has been criticised for prohibiting 'pornographic' behaviour, but it has reacted by saying that nudity is no longer allowed. 

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