public static Notice FromAtomEntry(AtomEntry entry)
		{
			Notice notice = new Notice();
			notice.DatePublished = entry.Published;
			notice.DateUpdated = entry.Updated;
			notice.Id = entry.Id.Uri.Content;
			notice.ContentType = entry.Content.Type;
			notice.Content = entry.Content.Content;
			notice.Subject = entry.Title.Text;
			IExtensionElementFactory factory = entry.FindExtension("ContinuityOfCareRecord", "urn:astm-org:CCR");
			if (factory != null)
			{
				XmlExtension extension = factory as XmlExtension;
				XmlSerializer serializer = new XmlSerializer(typeof(ContinuityOfCareRecord));
				XmlTextReader reader = new XmlTextReader(new StringReader(extension.Node.OuterXml));
				notice.CareRecord = serializer.Deserialize(reader) as ContinuityOfCareRecord;
			}
			return notice;
		}
		/// <summary>
		/// Posts a notice to the default profile on the register feed. Usable 
		/// for the AuthSub profile feed.
		/// </summary>
		/// <param name="notice"></param>
		public void PostNotice(Notice notice)
		{
			PostNoticeUrl(notice, DefaultRegisterFeed);
		}
		private void PostNoticeUrl(Notice notice, string url)
		{
			AtomEntry entry = new AtomEntry();
			entry.Title.Text = notice.Subject;
			entry.Content.Content = notice.Subject;
			entry.Content.Type = notice.ContentType;

			if (notice.CareRecord != null)
			{
				XmlSerializer serializer = new XmlSerializer(typeof(ContinuityOfCareRecord));
				using (StringWriter strWriter = new StringWriter())
				{
					XmlTextWriter writer = new XmlTextWriter(new StringWriter());
					serializer.Serialize(writer, notice.CareRecord);

					XmlDocument doc = new XmlDocument();
					doc.LoadXml(strWriter.ToString());
					entry.ExtensionElements.Add(new XmlExtension(doc.DocumentElement));
				}
			}

			notice = Notice.FromAtomEntry(this.Insert(new Uri(url), entry));
		}
		/// <summary>
		/// Posts a notice to the particular profile on the register feed. Available 
		/// under ClientLogin only.
		/// </summary>
		/// <param name="notice"></param>
		/// <param name="profileId"></param>
		public void PostNotice(Notice notice, string profileId)
		{
			PostNoticeUrl(notice, RegisterFeed + profileId);
		}