WP7 - What Makes Live Tile Unique?

If you were playing with the "Live Tiles" from the latest (at the moment) OS update to the Windows Phone code named "Mango", you might have been wondering what makes Live tiles unique and how many live tiles can be placed on the home screen of the user. Accidentally I found out that what makes the live tile unique is the tile reference or the tile URI

a usual way to create a tile would be:

ShellTile.Create(new Uri("/GotoPage.xaml?param1=value1&param2=value2, UriKind.Relative), tileData);

so whenever you change the value1 and value 2, a new live tile can be created.

Happy coding and have fun with the live tiles!