http://workhack.com/index.php

Ever wonder why a simple tasks list on a piece of paper or a whiteboard works better than any tasks management tool. Is it the hassle of getting the tasks into the tool, or the lack of priority visualization? Whatever the reason is, WorkHack.com attempts to solve the problem by offering a simple yet powerful tool that is easy to use and offers priority visualization by color and size.

miniWorkHack (pop-up version) without size visualization