At first it looked too complicated, but the more I read, the more I liked. Even if not for the chore chart part, the area where the kids get points for "trying their best" and "doing something the first time they are asked" hit home for me. This could work for us.
Simple & positive home behavior chart - when boxes are full a reward can be earned. We tried this for a while but my daughter filled some of the boxes really quickly and others not so fast causing us to have to keep track of several sheets of paper. We have changed to a different system.