Here is a tutorial for creating a Twitter-based Web application that will show tweets from selected geographical areas. The tutorial describes how to create an app, write a manifest file for it, and submit it to the Firefox Marketplace.
Over the course of the tutorial, we'll be employing these techniques and technologies to create a Twitter-based application meant for desktop, mobile phone, and mobile tablet devices. This app will show tweets from selected geographic areas, and is called Area Tweet. Once the app is completed, we'll create the appropriate manifest for submitting our app to the Firefox Marketplace!