Quantopian Open Contest is present in a lot of Quantopian users head.
This post is something quite different : it's about "kudos" (from greek "κύδος" or "kydos"). It means the glory and renown resulting from a successful action.
Maybe you should allow users to grant some "kudos" to other users.
When your public algo is being cloned, it could provide kudos.
If someone click on a button "I like this post", it could also.
I think such idea is important to keep a kind of community spirit.
(sorry "My 2 kudos")
PS: I won't win Quantopian Open... I'm not going live for now (so I won't be able to apply to Quantopian Managers Program)... but I'm sure I won't win a kudos contest too (Grant will be winner of such a contest !) ;-) that's life !