We've noticed over the last few days that we can only retrieve the last ~300 tweets containing certain search terms which are included in at least a 1,000 tweets a day. In the past we were always able to go 15 100 tweet pages deep in to the history of a particular query. Now we're limited to approximately 3 100 tweet pages.
Has the twitter search (both via the web and the API) started limiting the accessible history for certain search terms?