[simonw]

I'm assumed that was why the karma scores for the top ten users aren't visible - you can karma farm your way to the top ten but after that you're blind: https://news.ycombinator.com/leaders

Maybe psychologically that helps people think "why bother?"

[tomjakubowski]

You can click any of those profiles and see their karma, or some number claiming to be anyway.

[jonathankoren]

Nah. You just set the prize at top 10.