Twitter Support :: "Regardless of how you access Twitter, we are dedicated to making Twitter better, faster and more reliable for you. As part of this effort, we ask applications that work with Twitter to abide by a simple set of rules that we believe are in the interests of our users, and the health and vitality of the Twitter platform as a whole. We often take actions to enforce these rules. We have suspended UberTwitter and twidroyd for violating our policies."
How to comment on that? It speaks for itself. -
Update - ReadWriteWeb interviewed Twitter communications director Carolyn Penner and she told them that this was the result of discussion that have been on-going since April 2010.
Update - TechCrunch "The action is even more fascinating considering that UberMedia which operates UberTwitter and Twidroyd, is building an army of third-party Twitter clients, including Tweetdeck that compete directly with Twitter’s web and mobile clients."
Continue: Interview with Carolyn Penner (Twitter) www.readwriteweb.com - Twitter Suspends UberTwitter, Twidroyd
The original support information support.twitter.com - I'm Having Problems Logging In to UberTwitter or twidroyd