Readers of this blog may find this beta product interesting:
Use this application to get free estimates from the complete history of Twitter.
The application twittersifter.com provides search and retrieve access to every Twitter tweet in history. Powered by gnip.com, users can submit Twitter-certified "Gnip Historical Power Track" estimate requests using a variety of query rules.
When the query is done, twittersifter generates an email estimating the approximate number of tweets responsive to the query and the cost to execute the retrieval. Users of twittersifter can then either refine and resubmit the query or execute an ecommerce transaction to purchase the data.
Once the Twitter data is purchased, it can be exported in JSON or CSV formats. Estimates are free and you can submit an unlimited number of estimate requests. The price for data is $20/day searched and $200/million tweets.
The twittersifter application is designed and supported by Texifter. For more information, please contact [email protected].