Chris Winslet from MongoHQ, giving a talk on Twilio and Mongo. There are 3 videos in this talk:

JD Warren is a Ruby on Rails developer and extensive hardware hacker. Prior to joining isotope|eleven, he was a builder focusing on remodeling apartments and rental houses. In his spare time, JD builds robots, electronic circuits, and is a technical writer with work in several online and print publications and a recent book titled "Arduino Robotics".