This week's developer contest category is focused on combining Twilio's voice and SMS APIs with Drop.io's cloud file-sharing capabilities. The challenge invites developers to create innovative mashups that showcase the power of these two APIs, with a grand prize including a Netbook and additional prizes from Drop.io. To get started, developers can explore Drop.io's API documentation, tutorials, and example codes, as well as Twilio's resources for developers. Submissions must be received by March 7th to be eligible for the contest, which aims to encourage collaboration between Twilio and its partner APIs like Drop.io. The contest is open to all developers who want to encourage visibility for their API or project through a creative mashup with Twilio.