This is the first time, i have heard of this "The Not to do list" , but i think it is a pretty good concept, And should be used by one and all. And like the article suggests it is particularly good for those people who have just been promoted.

Excerpts from the Blog by michael hyatt on the topic

create a Not To-Do List. Here’s how:

Find a quiet place where you can think.

Look at your previous month’s calendar activities. Write down anything you’re not sure really fits your current job description.

Look at your upcoming appointments for the next month. Again, write down things that are questionable in terms of your current job description.

Go through your to-do list(s) and do the same thing. Write down the questionable activities.

You should now have a list of “not to-do candidates.” Good work! You’re almost done.

Now go through the list and put an asterisk beside each item that is significant enough that you want to add it to your official “Not To-Do List.”