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diff --git a/samples/DotNetOpenAuth.ApplicationBlock/OAuth2/Facebook/FacebookGraph.cs b/samples/DotNetOpenAuth.ApplicationBlock/OAuth2/Facebook/FacebookGraph.cs
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+++ b/samples/DotNetOpenAuth.ApplicationBlock/OAuth2/Facebook/FacebookGraph.cs
@@ -0,0 +1,303 @@
+//-----------------------------------------------------------------------
+// <copyright file="FacebookGraph.cs" company="Outercurve Foundation">
+//     Copyright (c) Outercurve Foundation. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.ApplicationBlock {
+	using System;
+	using System.Collections.Generic;
+	using System.Globalization;
+	using System.IO;
+	using System.Linq;
+	using System.Runtime.Serialization;
+	using System.Runtime.Serialization.Json;
+	using System.Text;
+
+	//// Documentation: https://developers.facebook.com/docs/reference/api/user/
+
+	[DataContract]
+	public class FacebookGraph : IOAuth2Graph {
+		private static DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(FacebookGraph));
+
+		/// <summary>
+		/// Gets or sets the user's Facebook ID
+		/// </summary>
+		[DataMember(Name = "id")]
+		public string Id { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's full name
+		/// </summary>
+		[DataMember(Name = "name")]
+		public string Name { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's first name
+		/// </summary>
+		[DataMember(Name = "first_name")]
+		public string FirstName { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's middle name
+		/// </summary>
+		[DataMember(Name = "middle_name")]
+		public string MiddleName { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's last name
+		/// </summary>
+		[DataMember(Name = "last_name")]
+		public string LastName { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's gender: female or male
+		/// </summary>
+		[DataMember(Name = "gender")]
+		public string Gender { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's locale
+		/// </summary>
+		[DataMember(Name = "locale")]
+		public string Locale { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's languages
+		/// </summary>
+		[DataMember(Name = "languages")]
+		public FacebookIdName[] Languages { get; set; }
+
+		/// <summary>
+		/// Gets or sets the URL of the profile for the user on Facebook
+		/// </summary>
+		[DataMember(Name = "link")]
+		public Uri Link { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's Facebook username
+		/// </summary>
+		[DataMember(Name = "username")]
+		public string Username { get; set; }
+
+		// age_range
+
+		// third_party_id
+
+		// installed
+
+		/// <summary>
+		/// Gets or sets the user's timezone offset from UTC
+		/// </summary>
+		[DataMember(Name = "timezone")]
+		public int? Timezone { get; set; }
+
+		/// <summary>
+		/// Gets or sets the last time the user's profile was updated; changes to the languages, link, timezone, verified, interested_in, favorite_athletes, favorite_teams, and video_upload_limits are not not reflected in this value
+		/// string containing an ISO-8601 datetime
+		/// </summary>
+		[DataMember(Name = "updated_time")]
+		public string UpdatedTime { get; set; }
+
+		// verified
+
+		// bio
+
+		/// <summary>
+		/// Gets or sets the user's birthday
+		/// Date string in MM/DD/YYYY format
+		/// </summary>
+		[DataMember(Name = "birthday")]
+		public string Birthday { get; set; }
+
+		[Obsolete]
+		[DataMember(Name = "birthday_date")]
+		public string BirthdayDate { get; set; }
+
+		// cover
+
+		// currency
+
+		// devices
+
+		// education
+
+		/// <summary>
+		/// Gets or sets the proxied or contact email address granted by the user
+		/// </summary>
+		[DataMember(Name = "email")]
+		public string Email { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's hometown
+		/// </summary>
+		[DataMember(Name = "hometown")]
+		public FacebookIdName Hometown { get; set; }
+
+		/// <summary>
+		/// Gets or sets the genders the user is interested in
+		/// </summary>
+		[DataMember(Name = "interested_in")]
+		public string[] InterestedIn { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's current city
+		/// </summary>
+		[DataMember(Name = "location")]
+		public FacebookIdName Location { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's political view
+		/// </summary>
+		[DataMember(Name = "political")]
+		public string Political { get; set; }
+
+		// payment_pricepoints
+
+		/// <summary>
+		/// Gets or sets the user's favorite athletes; this field is deprecated and will be removed in the near future
+		/// </summary>
+		[Obsolete]
+		[DataMember(Name = "favorite_athletes")]
+		public FacebookIdName[] FavoriteAthletes { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's favorite teams; this field is deprecated and will be removed in the near future
+		/// </summary>
+		[Obsolete]
+		[DataMember(Name = "favorite_teams")]
+		public FacebookIdName[] FavoriteTeams { get; set; }
+
+		/// <summary>
+		/// Gets or sets the URL of the user's profile pic (only returned if you explicitly specify a 'fields=picture' param)
+		/// If the "October 2012 Breaking Changes" migration setting is enabled for your app, this field will be an object with the url and is_silhouette fields; is_silhouette is true if the user has not uploaded a profile picture
+		/// </summary>
+		[DataMember(Name = "picture")]
+		public FacebookPicture Picture { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's favorite quotes
+		/// </summary>
+		[DataMember(Name = "quotes")]
+		public Uri Quotes { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's relationship status: Single, In a relationship, Engaged, Married, It's complicated, In an open relationship, Widowed, Separated, Divorced, In a civil union, In a domestic partnership
+		/// </summary>
+		[DataMember(Name = "relationship_status")]
+		public string RelationshipStatus { get; set; }
+
+		/// <summary>
+		/// Gets or sets the user's religion
+		/// </summary>
+		[DataMember(Name = "religion")]
+		public string Religion { get; set; }
+
+		// security_settings
+
+		/// <summary>
+		/// Gets or sets the user's significant other
+		/// </summary>
+		[DataMember(Name = "significant_other")]
+		public FacebookIdName SignificantOther { get; set; }
+
+		// video_upload_limits
+
+		/// <summary>
+		/// Gets or sets the URL of the user's personal website
+		/// </summary>
+		[DataMember(Name = "website")]
+		public Uri Website { get; set; }
+
+		public DateTime? BirthdayDT {
+			get {
+				if (!string.IsNullOrEmpty(this.Birthday) && (this.Locale != null)) {
+					CultureInfo ci = new CultureInfo(this.Locale.Replace('_', '-'));
+					return DateTime.Parse(this.Birthday, ci);
+				}
+
+				return null;
+			}
+		}
+
+		public Uri AvatarUrl {
+			get {
+				if ((this.Picture != null) && (this.Picture.Data != null) && (this.Picture.Data.Url != null)) {
+					return this.Picture.Data.Url;
+				}
+
+				return null;
+			}
+		}
+
+		public HumanGender GenderEnum {
+			get {
+				if (this.Gender == "male") {
+					return HumanGender.Male;
+				} else if (this.Gender == "female") {
+					return HumanGender.Female;
+				}
+
+				return HumanGender.Unknown;
+			}
+		}
+
+		public static FacebookGraph Deserialize(string json) {
+			if (string.IsNullOrEmpty(json)) {
+				throw new ArgumentNullException("json");
+			}
+
+			return Deserialize(new MemoryStream(Encoding.UTF8.GetBytes(json)));
+		}
+
+		public static FacebookGraph Deserialize(Stream jsonStream) {
+			if (jsonStream == null) {
+				throw new ArgumentNullException("jsonStream");
+			}
+
+			return (FacebookGraph)jsonSerializer.ReadObject(jsonStream);
+		}
+
+		public static class Fields {
+			public const string Defaults = "id,name,first_name,middle_name,last_name,gender,locale,link,username";
+
+			public const string Birthday = "locale,birthday";
+
+			public const string Email = "email";
+
+			public const string Picture = "picture";
+		}
+
+		/// <summary>
+		/// Obsolete: used only before October 2012
+		/// </summary>
+		[Obsolete]
+		[DataContract]
+		public class FacebookPicture {
+			[DataMember(Name = "data")]
+			public FacebookPictureData Data { get; set; }
+		}
+
+		/// <summary>
+		/// Obsolete: used only before October 2012
+		/// </summary>
+		[Obsolete]
+		[DataContract]
+		public class FacebookPictureData {
+			[DataMember(Name = "url")]
+			public Uri Url { get; set; }
+
+			[DataMember(Name = "is_silhouette")]
+			public bool IsSilhouette { get; set; }
+		}
+
+		[DataContract]
+		public class FacebookIdName {
+			[DataMember(Name = "id")]
+			public string Id { get; set; }
+
+			[DataMember(Name = "name")]
+			public string Name { get; set; }
+		}
+	}
+}