Wondering why there's double projects? Lying and cheating. I hate when people do this. Whenever you unshared a project, it retains its views, but when you reshare it, anyone who's already seen it counts as another view, meaning you can potentially double the views. But it's not a good thing. And when that happens, if a project was on trending before, it stays there. But the "new" project will also be able to get on trending. Just like we see here. That's what happened whenever you see multiple of the same project on the trending page. I have seen several popular scratchers do this before. I'll leave their names anonymous for their sakes. And like it says in the title, I hate when people do this.
