Rest Web Service Best URL

http://apigee.com/about/blog/technology/restful-api-design-what-about-errors
http://apigee.com/about/blog/technology/restful-api-design-what-about-errors
http://www.codingpedia.org/ama/resources-on-how-to-design-error-handling-in-a-rest-api/
http://www.codingpedia.org/ama/error-handling-in-rest-api-with-jersey/
http://www.petrikainulainen.net/programming/spring-framework/spring-from-the-trenches-adding-validation-to-a-rest-api/
http://apigee.com/about/blog/technology/restful-api-design-tips-versioning
https://github.com/paulc4/mvc-exceptions/tree/master/src/main/java