private void button1_Click(object sender, EventArgs e)
{
_oauth["consumer_key"] = MY_APP_SPECIFIC_CONSUMER_KEY;
_oauth["consumer_secret"] = MY_APP_SPECIFIC_CONSUMER_SECRET;
_oauth.AcquireRequestToken(URL_REQUEST_TOKEN, "POST");
var url = SERVICE_SPECIFIC_AUTHORIZE_URL_STUB + _oauth["token"];
webBrowser1.Visible = true;
webBrowser1.Url = new Uri(url);
// FOR EXTERNAL BROWSER: System.Diagnostics.Process.Start(url);
//testSubmit();
}