If there is a story about that chapter, or if you can add something, potentially to that chapter. That kind of exclusivity works super well. So i love that it's free. It's cheap. It's easy for you to do, completely automated. Love that as a reward charity thing. Depending on your audience, obviously, it depends on how well you pinch it right. I can't just be as simple as like will i'm going to give a dollar to some random charity because there's no connection there. You don't want to do the giveaway kind of thing where people win and others don't.