Did you know most political polls in the U.S. are still done by phone? Most of it is automated, with voters using the buttons on the phone to reply to questions. Now some of these polls--including those by the Democratic National Committee--can be performed by a mashup, Precision Polling.
If you're in Antarctica, no Twilio for you. Otherwise, there's a chance that your country is one of the 40 now supported by the Twilio API. The company announced the news at its annual conference. Most recently, it added 20 new countries, including the ability to have local phone numbers for those countries.