Board Thread:New Features/@comment-13918697-20140924084804/@comment-452-20140927042709

Actually... it turns out that it is against the TOU after all.

http://www.wikia.com/Terms_of_Use wrote:

You agree that you will not use the Service in any manner that is contrary to the Wikia Community Guidelines
 * User Conduct

Wikia Community Guidelines wrote:

Wikia believes in the open source movement. Creating content that can be shared and enjoyed by others is a big part of what we do. But, that doesn't mean we should ignore other's rights. Whether you use text, or images under license, with the author's permission, or under "fair use" guidelines, it's always polite to give the proper attribution.
 * Attribute fairly

Not politely giving attribution is "contrary to the Wikia Community Guidelines", and therefore against the TOU.