Good Gear Guide
In Pictures: Mozilla previews app store in time fo...
Firefox Marketplace apps install like normal apps
After you install an app from Firefox Marketplace, a launcher icon for the app is set on the home screen of Android, and in an app page in the browser. Apps from Firefox Marketplace are built on HTML5 and other open web technologies, so a Firefox app icon is essentially a shortcut, which will launch the Firefox browser engine and then go to a URL to load a web-based app.
In Pictures: Mozilla previews app store in time for the holidays