ASP.NET MVC 3 RESTful

/*HomeController.cs*/
using System.Web.Mvc;
using RiaLibrary.Web;

namespace RESTSample.Controllers
{
    public class HomeController : Controller
    {
        [HttpGet, Url("")]
        public JsonResult Index()
        {
            return Json(new { Message = "Hello ASP.NET MVC 3 RESTful WS!" }, JsonRequestBehavior.AllowGet);
        }

        [HttpGet, Url("{who?}")]
        public JsonResult SayHello(string who)
        {
            return Json(new { Message = "Hello, " + who + "!" }, JsonRequestBehavior.AllowGet);
        }
    }
}

/*Global.asax*/
using System.Web.Mvc;
using System.Web.Routing;
using RiaLibrary.Web;

namespace RESTSample
{
    // Note: For instructions on enabling IIS6 or IIS7 classic mode,
    // visit http://go.microsoft.com/?LinkId=9394801

    public class MvcApplication : System.Web.HttpApplication
    {
        public static void RegisterGlobalFilters(GlobalFilterCollection filters)
        {
            filters.Add(new HandleErrorAttribute());
        }

        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            routes.MapRoutes();

            routes.MapRoute(
                "Default", // Route name
                "{controller}/{action}/{id}", // URL with parameters
                new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
            );

        }

        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();

            RegisterGlobalFilters(GlobalFilters.Filters);
            RegisterRoutes(RouteTable.Routes);
        }
    }
}