It started out quite well:
Over the coming weeks, we will be making two important updates that will impact how you interact with Twitter applications. We are sending this notice to all Twitter users to make sure you are aware of these changes.Then I read the next paragraph:
Starting August 31, all applications will be required to use OAuth to access your Twitter account.At first it sounded reasonable, but then I realised that this email was being sent on 2nd of September!!! I know internet time is different from normal time, but how can they use the phrase "in the coming weeks" to refer to 2 days ago!!
Suddenly the penny dropped and I realised why BlueTwitSidebar stopped working with Twitter yesterday. I pinged the developer of this tool to let him know of the issue, but it turned out that he already knew about it becuase everyone was screaming at him.
Surely this is a very unfair way to treat users by telling them of a significant change in authentication policy after it has already been implemented :-(