The contest is open until February 6th at 11:59pm PT and winners will receive a Samsung Focus Windows Phone 7, $500 in AppHarbor credit, and $100 in Twilio credit. To participate, deploy your ASP.NET or WebMatrix app to AppHarbor for free and submit an entry using the official contest form. For those new to using Twilio with .NET, the API is simple and easy to use, with a library available to simplify access to the REST API and generate TwiML. The contest aims to encourage developers to build powerful voice apps with Twilio in AppHarbor.