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diff --git a/samples/DotNetOpenAuth.ApplicationBlock/GoogleConsumer.cs b/samples/DotNetOpenAuth.ApplicationBlock/GoogleConsumer.cs
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+//-----------------------------------------------------------------------
+// <copyright file="GoogleConsumer.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.ApplicationBlock {
+	using System;
+	using System.Collections.Generic;
+	using System.Linq;
+	using System.Xml.Linq;
+	using DotNetOpenAuth.Messaging;
+	using DotNetOpenAuth.OAuth;
+	using DotNetOpenAuth.OAuth.ChannelElements;
+
+	/// <summary>
+	/// A consumer capable of communicating with Google Data APIs.
+	/// </summary>
+	public static class GoogleConsumer {
+		/// <summary>
+		/// The Consumer to use for accessing Google data APIs.
+		/// </summary>
+		private static readonly ServiceProviderDescription GoogleDescription = new ServiceProviderDescription {
+			RequestTokenEndpoint = new MessageReceivingEndpoint("https://www.google.com/accounts/OAuthGetRequestToken", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest),
+			UserAuthorizationEndpoint = new MessageReceivingEndpoint("https://www.google.com/accounts/OAuthAuthorizeToken", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest),
+			AccessTokenEndpoint = new MessageReceivingEndpoint("https://www.google.com/accounts/OAuthGetAccessToken", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest),
+			TamperProtectionElements = new ITamperProtectionChannelBindingElement[] { new HmacSha1SigningBindingElement() },
+		};
+
+		/// <summary>
+		/// A mapping between Google's applications and their URI scope values.
+		/// </summary>
+		private static readonly Dictionary<Applications, string> DataScopeUris = new Dictionary<Applications, string> {
+			{ Applications.Contacts, "http://www.google.com/m8/feeds/" },
+			{ Applications.Calendar, "http://www.google.com/calendar/feeds/" },
+		};
+
+		/// <summary>
+		/// The URI to get contacts once authorization is granted.
+		/// </summary>
+		private static readonly MessageReceivingEndpoint GetContactsEndpoint = new MessageReceivingEndpoint("http://www.google.com/m8/feeds/contacts/default/full/", HttpDeliveryMethods.GetRequest);
+
+		/// <summary>
+		/// The many specific authorization scopes Google offers.
+		/// </summary>
+		[Flags]
+		public enum Applications : long {
+			/// <summary>
+			/// The Gmail address book.
+			/// </summary>
+			Contacts = 0x1,
+
+			/// <summary>
+			/// Appointments in Google Calendar.
+			/// </summary>
+			Calendar = 0x2,
+		}
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="WebConsumer"/> class that is prepared to communicate with Google.
+		/// </summary>
+		/// <param name="tokenManager">The token manager.</param>
+		/// <param name="consumerKey">The consumer key.</param>
+		/// <returns>The newly instantiated <see cref="WebConsumer"/>.</returns>
+		public static WebConsumer CreateWebConsumer(ITokenManager tokenManager, string consumerKey) {
+			return new WebConsumer(GoogleDescription, tokenManager) {
+				ConsumerKey = consumerKey,
+			};
+		}
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="DesktopConsumer"/> class that is prepared to communicate with Google.
+		/// </summary>
+		/// <param name="tokenManager">The token manager.</param>
+		/// <param name="consumerKey">The consumer key.</param>
+		/// <returns>The newly instantiated <see cref="DesktopConsumer"/>.</returns>
+		public static DesktopConsumer CreateDesktopConsumer(ITokenManager tokenManager, string consumerKey) {
+			return new DesktopConsumer(GoogleDescription, tokenManager) {
+				ConsumerKey = consumerKey,
+			};
+		}
+
+		/// <summary>
+		/// Requests authorization from Google to access data from a set of Google applications.
+		/// </summary>
+		/// <param name="consumer">The Google consumer previously constructed using <see cref="CreateWebConsumer"/> or <see cref="CreateDesktopConsumer"/>.</param>
+		/// <param name="requestedAccessScope">The requested access scope.</param>
+		public static void RequestAuthorization(WebConsumer consumer, Applications requestedAccessScope) {
+			if (consumer == null) {
+				throw new ArgumentNullException("consumer");
+			}
+
+			var extraParameters = new Dictionary<string, string> {
+				{ "scope", GetScopeUri(requestedAccessScope) },
+			};
+			Uri callback = Util.GetCallbackUrlFromContext();
+			var request = consumer.PrepareRequestUserAuthorization(callback, extraParameters, null);
+			consumer.Channel.Send(request).Send();
+		}
+
+		/// <summary>
+		/// Requests authorization from Google to access data from a set of Google applications.
+		/// </summary>
+		/// <param name="consumer">The Google consumer previously constructed using <see cref="CreateWebConsumer"/> or <see cref="CreateDesktopConsumer"/>.</param>
+		/// <param name="requestedAccessScope">The requested access scope.</param>
+		/// <param name="requestToken">The unauthorized request token assigned by Google.</param>
+		/// <returns>The request token</returns>
+		public static Uri RequestAuthorization(DesktopConsumer consumer, Applications requestedAccessScope, out string requestToken) {
+			if (consumer == null) {
+				throw new ArgumentNullException("consumer");
+			}
+
+			var extraParameters = new Dictionary<string, string> {
+				{ "scope", GetScopeUri(requestedAccessScope) },
+			};
+
+			return consumer.RequestUserAuthorization(extraParameters, null, out requestToken);
+		}
+
+		/// <summary>
+		/// Gets the Gmail address book's contents.
+		/// </summary>
+		/// <param name="consumer">The Google consumer previously constructed using <see cref="CreateWebConsumer"/> or <see cref="CreateDesktopConsumer"/>.</param>
+		/// <param name="accessToken">The access token previously retrieved.</param>
+		/// <returns>An XML document returned by Google.</returns>
+		public static XDocument GetContacts(ConsumerBase consumer, string accessToken) {
+			if (consumer == null) {
+				throw new ArgumentNullException("consumer");
+			}
+
+			var response = consumer.PrepareAuthorizedRequestAndSend(GetContactsEndpoint, accessToken);
+			XDocument result = XDocument.Parse(response.Body);
+			return result;
+		}
+
+		/// <summary>
+		/// Gets the scope URI in Google's format.
+		/// </summary>
+		/// <param name="scope">The scope, which may include one or several Google applications.</param>
+		/// <returns>A space-delimited list of URIs for the requested Google applications.</returns>
+		private static string GetScopeUri(Applications scope) {
+			return string.Join(" ", Util.GetIndividualFlags(scope).Select(app => DataScopeUris[(Applications)app]).ToArray());
+		}
+	}
+}