The Milk Wins Netbook Week #4 – This Week: Open Source It!` is a challenge where participants integrate the power of voice with the simplicity and utility of Remember the Milk, a popular tool for capturing to-do lists and providing contextual reminders. To participate, users apply for an RTM API key, tell CallTheMilk their API key and cell phone number, and then call a specific number to add new tasks. The challenge encourages developers to make their code available through open source, with various resources provided by Twilio to help get started, including documentation, SDKs, helper libraries, quickstarts, and tutorials.