In another example of why popular Internet startups need hard and fast rules for developers and users alike (Facebook - are you listening?), Twitter made a day-of announcement, "neglecting" the business plans of developers who were using the formerly-somewhat-unrestricted policy to create new ventures, according to Stay N' Alive's Jesse Stay.
A little notice would have been helpful, but is very consistent with the way developers have been treated over the past year or more by Twitter. Yes, I’m a big boy and we’ll survive, but that’s besides the point. You can read more about what developers are experiencing over on LouisGray. Put lightly, I’m not happy.
Stay insists that Twitter needs a "firm Terms of Service" as a foundation and a "days notice" policy so that developers aren't suddenly confronted with game-changing decisions.