MediaWiki extensions are routinely enabled for localisation at translatewiki.net. Yesterday this happened for the WebFonts extension.
In this extension the usual suspects are supported. Obviously Malayalam because Santhosh is a Malayalee and English because how else do you show that it works.
When your language is to be supported with web fonts, one way of showing interest is that you make sure that this extension is localised for your language. When your language is not supported, you will not notice anything in your user interface.