This seems really, incredibly powerful, but I'm having a hard time thinking of great applications for it. Their examples are very interesting:<p><a href="http://www.twilio.com/docs/howto/" rel="nofollow">http://www.twilio.com/docs/howto/</a><p>- Phone menu, where Twilio handles the call and listens to DTMF tones and/or voice input, then sends the request to my web server, which then responds with text, audio clips, or prompts for further input.<p>- Voicemail transcription, where I initiate a call to my voicemail box through Twilio, and then use their text-to-speech conversion to transcribe my voicemails.<p>... and more. What would you do with an API that replaces PBX programming with XML exchanges over HTTP?<p>The best idea I have at the moment is for an online store, where a customer could enter the number and click to complete their order over the phone. When they submit their number, the web server records their order number and contents to pass on to a call center representative.