Unfortunately, the Sifter service and website has been decommissioned as of September 30, 2018. Thanks to our 6,970 users who created 16,128 free estimates from the complete, undeleted history of Twitter between 1/14/2014 and 9/29/2018.
Please contact Twitter for approval of future academic or commercial use cases. If you can get an approved use case from Twitter, we can still help you work with the data inside DiscoverText.
@DiscoverText remains open and is still the top-ranked text analysis platform on the Internet.
All paid jobs prior to the decommissioning will still be honored.
The fastest method is to pay with a credit card via PayPal after you accept the job. This will instantly start the data retrieval process. We can also provide an invoice. If the invoice is being sent through a university, there may be a delay in processing because of possible university-specific administrative requirements to add Texifter as a vendor.
The free trial of DiscoverText is self-serve: http://discovertext.com/start-a-free-trial/.
Also see the FAQ: When can I expect to receive Sifter data paid for via PayPal?