User blog comment:Jake R/Is this breaking the rules/@comment-474870-20100924062723/@comment-122657-20100928234210

The Wikia Staff can tell you if the same IP address uses multiple accounts, or if multiple accounts you give them are emanating from the same IP address.

This is an indicator, but not proof, of 'sockpuppeting'. Individual wikis can allow or disallow this through their local rules.