When you check out the website utf8-cha
George is using Microsoft on his computer and as long as he uses Microsoft products, the character elifi is available to him. When he localises however, he gets the little rectangle with numbers indicating the use of a font with missing characters.
On a computer running Ubuntu, there is no missing character.
George wants a solution badly. And the enabling technology needed are provided in web fonts. Given that Ubuntu provides proper support, there are fonts that are freely licensed. So once MediaWiki supports web fonts, Mingrelian can function to the full extend of its potential.