User information is stored on servers in the United States. The only information that you need give is a username and password. The username does not need to be your real name. Therefore, any personal information you choose to give is not compulsory. No personal information should be given on the wiki by persons aged less than 13 years. If you choose to enter a real name in your preferences, this will be publicly available. However, this field is optional, and there is no requirement for any user to give a real name. Users under 13 should not give their real name.