void Destroy_Friend(string us, string username, string password)
        {
            try
            {
                // encode the username/password
                string user = Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(username + ":" + password));
                // connect with the destroy page
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://twitter.com/friendships/destroy/" + us + ".xml");
                // set the method to DELETE
                request.Method = "DELETE";
                request.ServicePoint.Expect100Continue = true;
                // set the authorisation levels
                request.Headers.Add("Authorization", "Basic " + user);
                request.ContentType = "application/x-www-form-urlencoded";
                WebResponse r = request.GetResponse();
                r.Close();
            }
            catch {/* DO NOTHING */}
        }