Board Thread:General Discussion/@comment-20644-20170123193022/@comment-20644-20170124005254

The Rim of the Sky wrote: Reasons for not using Monobook or Vector, which every major wiki on the internet (other than Wikia) uses. This wouldn't warrant a full blog post, but&mdash;in addition to wanting to modernize the look of the site when we released the current skin in 2010&mdash;the primary reason is because we're a for-profit website based on ad revenue, and Monobook/Vector can't be monetized in any significant way. That style of theming wasn't designed with ads in mind.

We still offer Monobook as a preference for logged-in users, though, much like we offer a logged-in option for hiding most ads on the site.