User blog comment:Gardimuer/Publisher sells BioShock Wiki "books"/@comment-1022794-20111209034604/@comment-1401334-20111209041015

Technically, since Wikia gets ad revenue from hosting their wikis, no Wikia site can safely claim "fair use." However, most companies wouldn't want to waste money prosecuting a website that is run by and for their own fans and that isn't cutting in on their profit margins.

You might be interested in a forum topic on Wikia Community Central that discusses an issue similar to yours: Forum:Amazon.com