Because we have thousands & thousands of new players coming into the game for the Virtual U.S. Open, we wanted to create a less intimidating format.
And given there is a sweepstakes winner along with with the championship winner, it still creates a nice opportunity for those new players. They simply have to post a score.
But the greatest part of this format... once they do, you'd be surprised how many will post another. And another.
The leaderboard is certainly a motivator for the most competitive of players. But with many others (esp. the new players), it's getting into red numbers, or breaking 80, 90 or 100... or beating their co-workers... etc.