Less free underscores in number literals

[Kagamin]

Rainer Deyke Wrote:

> Using groupings of three digits in Japanese seems extremely awkward,
> especially for larger numbers, since you would have to mentally regroup
> the digits in groups of four in order to read it.  It's not just the
> written language but the spoken language that uses groups of four.  For
> example, the number 1,234,567,890 would be read as 12億, 3456万, 7890.
> 
> If amazon.jp uses groups of three, then my initial reaction is
> "imperfect localization".

You can see a video made by japanese themselves.
http://www.youtube.com/watch?v=zQrP8ELjVLc
At 0:10 you can see youtube site with watch count 1024,310 which is effortlessly read as hyaku man.
screenshot: http://i55.tinypic.com/2niazvk.jpg