User blog comment:Cristina7/Introducing Discussions, a New Platform For Engaging Your Community/@comment-24687156-20160909160429

◾Discussions drives 50% of all new Wikia account creation each month. That’s right! It’s doubled monthly registrations, even with the limited beta release

It doesn't matter that much, since they do not contribute to the wiki. They only increase WAM.

◾When Discussions are featured at the top of the app home screen, article views increase by 14% and more Discussions posts are created as well.

Ok, but this isn't helping in improving articles.

◾Users who view Discussions are two times more likely to return within the next month, and users who create a post or reply are four times more likely to return.

Doesn't matter that much, since they do not contribute.