To add to this, the exact search index is related to the frequency of Tweets and their relevance. The role of search.twitter.com is to provide a real-time, relevant search of what is being discussed on Twitter now instead of an archival search through the history of Twitter. A good resource to understand what isn't indexed in search is this help article:
http://support.twitter.com/groups/32-something-s-not-working/topics/118-search/articles/66018-my-tweets-or-hashtags-are-missing-from-search-known-issue To answer your question about the search index history, we don't publish that information. The size of the index fluctuates based on the number of Tweets being made which means, the more Tweets there are the shorter the index period is. We're working to improve the duration of the search index and improve the relevance of the results. Best, Matt On Thu, Aug 12, 2010 at 10:47 AM, AdamD <duvan...@gmail.com> wrote: > It appears that Twitter search is down to four days of backlog now. It > was five days a couple weeks ago. And in the back of my memory there > was once months of search history. > > Is there a record anywhere of changes to the history? And I think I > understand the purpose of decreasing the history, but is there an > official reason for the changes? > > Thanks, > Adam DuVander > ProgrammableWeb > -- Matt Harris Developer Advocate, Twitter http://twitter.com/themattharris
