Thread:Dopp/@comment-2200849-20120512154126/@comment-2200849-20120515125122

Translatewiki indicates that it creates a new page, Special:WebFonts, for this purpose. Also, if a font is called by font-family, it checks whether it is available and applies it. It seems like though that it was intended primarily for client–side use and internationalization; the documentation states they add any freely licensed font if requested.