Over on the main Twitter blog @nk has written about a new Lists
feature we're getting ready to launch:http://blog.twitter.com/2009/09/soon-to-launch-lists.html
. We just
wanted to let API developers know that we'll be shipping an API for it
on day one. You'll be able to do things like create lists, add and
remove users from lists, find out who has been added to a list and
read the tweet timeline for a given list.
Stay tuned for documentations on the full Lists API soon.
Twitter Platform Team