Paying for moderation/upvotes sounds like a terrible idea to me, it basically turn all posts into "promoted posts". If the platform becomes successful what will prevent companies and lobbyists from paying to have their content at the top, always? This is already a problem with popular platforms like reddit (and to a lesser extent HN) where this is actually considered inappropriate and against the rules, I'm not sure it's a great idea to embrace it.
Being able to "tip" the content creator to reward their work is good however, but it's not particularly novel.
>forgot to mention that if you upvote content, later upvotes of the same content earn you money.
Now I can't imagine how anybody could think that's a good idea. It incentivizes you upvote not content that you deem interesting but content that you think other will find interesting. In other words the website pays you to play into the hivemind.
Imagine reddit (which already has huge hivemind and low quality content issues on big subreddits) if you rewarded people for upvoting popular content and punishing them for upvoting more unusual posts that might not fare as good. Sounds like a terrible idea to me. See a funny cat gif being posted? Quickly upvote it to reap an easy reward. See a post about a very interesting but complex essay on the geopolitics of Botswana ? Better not risk and and lose some money.