At the top of the application, above the Flash embed, we need a standard installation bar. Like the ones used in Zynga games. The ones with percentage progress bars. 5 steps (20% progress each): 1.) Install, 2.) Get Updates (button that user can press to grant email permissions), 3.) Bookmark (button that user can press to bookmark the application), 4.) Like (button that user can press to Like the application), 5.) Publish Faster (button that user can press to grant publishing permission).
See FarmVille for an example if you haven't got it so far. The game is FBML based.