hi all. we launched an endpoint yesterday that allows you to fetch 20 users by user_id or by screen_name at a time -- we call this our "bulk user show" API. for example, to retrieve user objects for user IDs 12863272, 3191321, 9160152, 8285392 and simultaneously screen names of rsarver and wilhelmbierbaum, put together the following authenticated request
http://api.twitter.com/1/users/lookup.xml?user_id=12863272,3191321,9160152,8285392&screen_name=rsarver,wilhelmbierbaum and you will receive an XML array of those six user objects. you can find more documentation at http://apiwiki.twitter.com/Twitter-REST-API-Method:-users-lookup. thanks! -- Raffi Krikorian Twitter Platform Team http://twitter.com/raffi