We do have a reputation system, but it is being changed. Personally, I think a points system for posts will bring us right back to what Reddit was.
You should post for the sake of engaging with the community you are posting to, but many accounts were repost bots because of the karma system.
Ah, I tried to be as vague as possible, so you shouldn’t be spoiled on it at least. Maybe I’ll give it a shot when it goes on sale.