The Windows Store Submission C# Sample Code by Microsoft provides code examples for updating an app submission, creating and committing an add-on submission, updating an add-on submission, and updating a package flight submission.
Prosperent (quickly growing ad network) and CloudFlare (content delivery network focused on low touch app launches) have announced a partnership aimed at quickly monetizing websites without complicated development work. The partnership is simple, seems obvious, and should intrigue developers across many markets. Most importantly, the partnership should create new ways for anybody/any company with an online presence to make money. Check out the PW profiles for the Prosperent API and the CloudFlare API.