Thoughtboxes - organize everything you do

"Thoughtboxes is a free site that allows you to get organized using boxes that act like sticky notes. You can create categories and then create "thoughtboxes" in each category. You can use the boxes for to-do lists, notes, lists, links, and more."

http://educationaltechnologyguy.blogspot.com/2011/03/thoughtboxes-organize-everything-you-do.html

http://thoughtbox.es/