In the online world, we're accustomed to using nicknames or pseudonyms. However, in the tradition of a wiki, the norm is to identify yourself by your given name, in the format FirstnameLastname.

There’s not a formal proscription against using a pseudonym here, however. Just be aware that some people may think the use of one implies a lack of seriousness.

See also http://meatballwiki.org/wiki/UseRealNames