Localization is a place where something happens or is set and may also refer to cultural adaptation for specific countries, regions, or groups. Language localisation is not merely a translation activity, because it involves a comprehensive study of the target culture in order to correctly adapt the product to local needs.

Questions having the localization tag refers to place and/or culture for specific countries, regions, or groups.

Reference and more to read: http://en.wikipedia.org/wiki/Language_localisation