We have been asked more frequently recently about migrating wiki owners from Referata to our servers. Referata runs Semantic MediaWiki, but as of this writing in October 2019, they are using MediaWiki version 1.25.5 which was released March 4, 2016, meaning it’s very old and has known security issues.
Our servers run the latest stable version of MediaWiki and all installs are private installs, not farms, so you can upgrade your wiki software whenever you want, or you can ask us to do that for you.
Don’t settle for ancient wiki software — we can migrate your site for you to a modern install.