Great news, for all paying members you can now access a wiki premium add-on. Creating a wiki is as easy as adding a post or page. All editing is done on the front end, and permissions can set for all users to edit, or just users who have editing role priviledges on the site. You can assign categories and tags to your wikis, and add comments to the discussion area. E-mail notifications can be sent to those editing the wiki. There is also a place for reviewing revision history. Admins simply click on the Advanced tab to edit the wiki options in the Dashboard back-end.