It provides a great way of visually keeping track of all the positive things that are happening in class (negative points are there should you desire), providing a nice way to revisit the positives during they day and give praise to the children who have been making efforts each day.
A class can be set up in a matter of minutes, with each child being given their own avatar, of which there are many, that can then be awarded points based on a set of fully customisable criteria. If desired, points can be removed for chosen criteria.