One thing hasn’t changed in Web 2.0: users can be from many different countries, speaking many different languages. This session will show how to design internationalized SOAP and REST web services, how to deal with multiple languages in syndication, and how to make all of this work with Ajax in the browser. Over the course of the session we will take a plain, screen-scraping Web 1.0 currency converter and remake it into a multilingual, personalized Web 2.0 mashup, gadget, feed, and service. Learn the principles and apply them in your environment.