Between April 16 and June 1, developers can enter by joining App Builder Rewards and completing the "Every Dev Has a Story" quest with 50-200 words about an application published in the Windows or Windows Phone Store, or an Azure application or developer story that includes:
Developers can submit up to five unique stories that will be judged on: technical genius and innovation (50%), promotional tactics (20%), monetization (15%) and human interest (15%).
· All participants receive 250,000 Ad Duplex impressions ($400 value) for submitting a story. (Max of 1 $400 Ad Duplex package per dev)
Grand prize winners (15) receive a Dell Venue 8 Pro ($329 value) and an additional 1 Million Ad Duplex advertising impressions ($1,000 value).
For more information, check out https://build.windowsstore.com/rewards