Attention Socialize Developers:
Last wednesday, November 28th Twitter changed its OAuth mechanism by ensuring that the consumer key/secret was passed along with every request.
Since Socialize did not require this from developers previously, user authentication with Twitter started returning errors as of Nov 28th.
To fix this issue we added two additional fields for the Twitter setup. You must now provide your Twitter app’s consumer key and secret key in App Settings section of your App Intelligence Dashboard, as noted in the screenshot at left.
You can find your twitter consumer key and secret here: https://dev.twitter.com/