Every item you can harvest on your Farm has a Leader role associated with it, and every time you harvest an item, you score a point toward that role.
It takes 100 points to unlock a Leader role, which allows you to use that role to color your name on the server with the /role select command. For those who like a little competition, there is the Leaderboard to track who has the most points for an item referred to as the Top Leader.
The current Leaderboard can be found in the Town News channel. Clicking on one of the buttons will display the Top Leader's current score, the next closest five members, and your score.
The Leaderboard is reset at the beginning of each month.