User blog comment:Sarah Manley/Join us for Google Hangout today/@comment-5884303-20130603230943

It's not for a Wikia wiki, but I can vouch for saying that Twitter can help promote a wiki extremely greatly, as I've seen while running @NinjagoWiki. Especially with this wiki's news, Twitter helped the wiki get more user engagement and broadcast our new features we offered on the wiki (such as news, reviews, etc).

Besides Twitter, associating with other websites and communities about the same subject help a a lot. Most wikis that I use and administrate are about LEGO, so the wiki startups I've made (even though none of them have yet been hosted on Wikia) gained much success in the online and even the offline LEGO fan community from engaging and putting the wikis out there on popular LEGO forums, blogs, and representing the wiki at fan conventions and more.