Ask-a-Human by Eugene Osovetsky
By combining Twilio with Amazon Mechanical Turk,
Ask-a-Human allows anyone with a caller-ID-enabled phone to call a
toll-free number, submit the question, and then get called back with
the answer. Ask-a-Human uses two incoming Twilio numbers (a toll-free one for
the question submitters, and a toll one for the Mechanical Turk answer
submitters). The application is written on ASP.NET, and is completely
stateless (with all state being handled by Twilio and MTurk).
Try it out! Call (866) 584-0774 from
any caller-ID enabled phone, ask any question, and you will get called
back with the answer within one hour.