public void LoadData()
        {
            string url = "http://feeds.feed.it/rss";
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new Uri(url));
            request.BeginGetResponse(ResponseHandler, request);
        }

        private void ResponseHandler(IAsyncResult asyncResult)
        {
            HttpWebRequest request = (HttpWebRequest)asyncResult.AsyncState;
            HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(asyncResult);

            if (response.StatusCode == HttpStatusCode.OK)
            {
                XmlReader reader = XmlReader.Create(response.GetResponseStream());
                SyndicationFeed newFeed = SyndicationFeed.Load(reader);
                
                MainListBox.Dispatcher.BeginInvoke(delegate
                {
                    MainListBox.ItemsSource = newFeed.Items;
                });
            }
        }


<TextBlock 
                                            x:Name="ItemText" 
                                            Margin="12,0,0,0" 
                                            Text="{Binding Title.Text}" 
                                            Style="{StaticResource PhoneTextSubtleStyle}" 
                                            TextWrapping="Wrap" 
                                            MaxWidth="450"/>