[adamkiss]

I thought so as well first time, but it seems they do, see 'subset' section here: http://www.edgefonts.com/#url-specification

Also: http://jsfiddle.net/6zUQu/1/

It seems that only the example on their site includes 'default' character set. Note that, though, sadly not all fonts have different than latin-1, or partial latin-1-ext.