User blog comment:SierraFanGuy/I know someone who has 3 accounts/@comment-303594-20140223203543/@comment-1330470-20140223204455

"Sockpuppeting" means to use multiple accounts for nefarious purposes, such as manipulation of public discussions, impersonation, or ban evasion. If they're not doing any of that, then Wikia does not take issue with users who have multiple accounts.

There is no global policy against multiple accounts, but individual wikis sometimes may take issue and choose to ban a user with multiple accounts (even in the absence of ban evasion or other unwholesome activities). Community Central, however, is not a wiki which will take issue with such users.