The documentation at http://dev.twitter.com/doc/get/statuses/retweets/:id states it will return up to 100 of the first retweets of a given tweet.
However, in practice the method seems to only return the recent Retweets for a given Tweet. Take these two urls: http://www.flickfolia.com/free shows 17 Retweets. This url is using the api to return Retweets. http://twitter.com/#!/Flickfolia/status/85127683410886656 shows that there has been 29 Retweets. Note: The stats are as of the time of this post. -- Twitter developer documentation and resources: https://dev.twitter.com/doc API updates via Twitter: https://twitter.com/twitterapi Issues/Enhancements Tracker: https://code.google.com/p/twitter-api/issues/list Change your membership to this group: https://groups.google.com/forum/#!forum/twitter-development-talk