I clicked "Login or Register: Twitter" from this site's login page and ended up with an error message that reads:
Unhandled Exception ("HTTPFutureHTTPResponseStatus")
[HTTP/403]
<?xml version="1.0" encoding="UTF-8"?><errors><error code="415">Callback URL not approved for this client application. Approved callback URLs can be adjusted in your application settings</error></errors>If twitter login isn't intended to work, it should be disabled. Or if it is, it should be fixed.
(i do not have a twitter account, so i can't test it all the way through)