No, Google Web Fonts tailor served CSS to the browser agent. Now, Firefox receives 'woff' with all requested languages combined in the single file, recent Chrom

No, Google Web Fonts tailor served CSS to the browser agent. Now, Firefox receives 'woff' with all requested languages combined in the single file, recent Chrome receives 'woff2' with all available languages in separate files. Try visiting http://fonts.googleapis.com/css?family=Open+Sans:400&subset=latin,greek http://fonts.googleapis.com/css?family=Open+Sans:400&subset=... in different browsers.