The main screen can give out a random anecdote.
The "Favorites" / "Anecdote" screen stores the jokes you like.
Using the "Search" screen, you can find an anecdote by a keyword (such a word should appear in the anecdote in exactly the same spelling, without spaces).
When you click on an anecdote on any of the screens, it will update its status: it will be added or removed from Favorites.