Hi Don,
Yes, Twitter has turned oAuth back on. From what I understand, the
only difference is that they are not supporting the callback URL
parameter, and have reduced the TTL for request tokens.
"Deprecated (REST): Support for the oauth_callback parameter has been
removed due to security vulnerability. (
http://bit.ly/18gF5a)"
http://apiwiki.twitter.com/REST-API-Changelog
Cheers,
Ryan