I started using Twitter in 2007 because I heard of a cool new Mac app called Twitterrific. One of my favorite aspects of Twitter has been the third party app scene and they've made a huge impact for Twitter (like the invention of the "Tweet" in Twitterrific and pull to refresh in Tweetie). Yesterday it sure looks like Twitter has killed the API and has broken apps without even saying anything to the developers that have supported them for the past decade. I hope I'm wrong and this was just a mistake caused by the lack of employees running the company, but that is feeling less likely every hour.