Board Thread:Support Requests - Getting Technical/@comment-5558012-20160515144804/@comment-1757994-20160516183839

Vengir wrote: ... As far as I'm aware, there is nothing in the TOU forbidding account sharing. Wikia is not a premium page or an online game, so there would be little reason for that. Prohibitions on account sharing are about account security, not collecting revenue from multiple parties. The "owner" of the account is responsible for the actions taken by the account.

As for TOU, I think

User Conduct
...

You further agree:

... ... would cover it. It's hard for me to see how you can share accounts without sharing the passwords for them.
 * To maintain the confidentiality of any password(s) associated with your use of the Service;