"Awesome;' "Super;' "Well done;' and many other positive, but empty phrases. Research on this 'over-justification effect' indicates that frequent praise lacking in content does not increase the desired behavior as well as does occasional, but informative, feedback.
This is something we practice at our center. We try and stray away from the "Good job" and "Nicely done!". We label the action that we recognize the child doing. "I like the way you are helping a friend clean up, what a kind friend you are".