I have a suggestion that runs the "Questions in Other Languages Forum" more effectively.
As far as I know, there are many Japanese Excel users who have question. But they tend to close their browser if the information is written in English.
So I think that we should've a help document for Registration written in each languages so that non English native visitors can easyly be a members of MrExcel.com.
One thing we could try as a simple add-on to your suggestion would be to list the each language--in that language--under the forum name on the index page.
So instead of 'Spanish' it would be 'Español,' 'French' would be 'Français' and so on. Of course, I would need some help/input from others as to the correct phrase and spelling. I'm also not sure if Japanese characters would display correctly but I figure it's worth a try.