Some time ago, I set up a Twitter account to inform developers of changes to the API. That account had languished somewhat, but I've brought it back as @twitterapi (http://twitter.com/twitterapi). You may want to follow this user for handy API updates.
Speaking of which, we've deployed a number of fixes over the past couple days, and more are coming. Check out http://apiwiki.twitter.com/REST+API+Changelog for the details. -- Alex Payne - API Lead, Twitter, Inc. http://twitter.com/al3x
