Show HN: My Weekend Project, PhoneShuffle. (415) 366-8970

Hey HN, just thought I'd share a little toy project I put together over the weekend. It's basically just ChatRoulette over the phone. Pretty sure its only appeal will be novelty, but it was one of the ideas I had when I was toying around with Twilio's API, so voila.

One idea I had for making it more interesting/useful was allowing you to select a "category" or "location" so that you could be randomly paired with people from the same location or people with similar interests. Any thoughts?

...just curious, how did you implement this over a regular phone line?