Well it works like plutocracy. The rule of wealth / money. Your stake is money. Those who have the most stake get to have the most power in the system. if people don't want you to get rewarded, they can downvote you and take away the rewards that other allocated to you. It is highly abused imo (at least in my case and some other cases), and was originally supposed to fight abuse, but it's often used in abusive ways just to take rewards away from others because you don't like them, don't like their content, or think they don't deserve what they are being rewarded by others.

If you look at my posts, pretty sure it's once a day not two ;)