I'm not big on extrinsic rewards as a parenting tool. But sometimes kids like having structure. I'm a go-with-the-flow type. My ex husband is a more structured type. When we began homeschooling, we tried it my way -- and it was a disaster. This kids hated it. So we tried it "daddy's way" -- and it was a disaster. The kids hated it. The kids were, surprise surprise, somewhere between their two parents in that regard. And they also differed from each other. My older one is more like me and my younger one is more like their dad. We ended up setting up charts and stuff so the kids had a tool to track activities and goals without having to bug mom all day, every day about how much more there was to do and so forth -- we did this more for the kids' sanity than for mine. They hated not knowing and having to ask so much.

So I think it depends in part on how one uses something like this. I don't think it has to be about the top listed point: Motivate kids with an end goal in mind. It can be more about their next item: Track progress towards goals. It's just a tool. I'm sure different parents will use it differently, depending upon a variety of factors including their parenting philosophy.