User blog comment:The Ultimate Thinker/How to catch a Sock Puppet?/@comment-22434585-20140920184358/@comment-26505747-20140920192501

This is Wikia´s definition of a Sock Puppet:

A sockpuppet is a term used to refer to a someone who has created another account to cause a problem on a wikia.

My personal opinion regarding Sock Puppetry is that it´s not about "if you have another account" but "what you do with it". If they are indeed the same person but have not done anything wrong (and are actually helping the wiki), then it´s not a bad thing at all.