Delivering on Yahoo! Mobile’s promise of globally accessible products, a few weeks ago we released Yahoo! Go 3.0 in 6 new countries. Germany, UK, France, Spain, Italy and Canada can now get a fully localized Yahoo! Go 3.0 experience in their native language. Yahoo! Go asks the mobile user to select their country when they use Yahoo! Go for the first time. This country information means that developers can build widgets with local awareness. The country and language information is included in a page request sent by Yahoo’s mobile application server.

• Accept-Language
  This HTTP header contains the RFC 4646/4647 language code. For a US user this language code is mainly “Accept-Language: en-US”. For a German user the header would contain “Accept-Language: de-DE”. Yahoo! Go also supports multiple languages in the one country. For instance, in Canada, the user has the choice to choose between Canada/English (en-CA) and Canada/French (fr-CA).

• Geo-Country
  This header contains only the country setting as an ISO 3166 country or UN M.49 region code. A sample header would look like this for Canada: “Geo-Country: CA”.

This language and country information can be very useful to you when deciding which language, or what type of content your widget should offer. Especially if you offer default values in your widget (like default currencies, cities or formats) you can now provide a better user experience by showing country and language specific content.

For our friends in other countries, we have not forgotten about you! We continue to work hard to roll out Yahoo! Go 3.0 to new countries and new devices, so stay tuned to this blog for the latest updates.

Au revoir, Auf Wiedersehen, Adios, Ciao, until next time!