Recently we dropped the Gardenhose sample rate down from roughly 15% to roughly 5% of all public statuses in response to a capacity limitation. We've added considerable bandwidth headroom to the
stream.twitter.com cluster, and we've provisionally increased the sample to roughly 10%. As documented since the release of the sampled endpoint, this rate is subject to continuous and unannounced change. Note that "roughly X percent" remains a somewhat complicated proportion that varies in response to certain other proportions in the Twitter system and is not an precise description of the sampling algorithm.
We've also increased a number of limits on other endpoints to better reflect current usage:
Shadow: 80,000 accounts to 100,000 accounts
Follow: 400 accounts to 5,000 accounts
LocationRestricted and LocationDefault bounding boxes can now be up to 360-degrees per side. This allows total coverage at the potential risk of inducing filter rate limits.
LocationDefault: 10 boxes to 25 boxes
Please pardon what is a late-night production change for many developers. Caution dictates an off-peak deploy of these rate limit changes.
-John Kalucki
Twitter, Inc.