The paper block is just that, a block of scratch paper that you can terror off. Like a 3M sticky note, but no sticky side. Just paper. The paper block has become a key part of my GTD dump process. Someone storms into my office with something for me to do while I am already working on a project. I jott it down on my paper block, rip of the page and put it in my inbox. Then continue on what I was originally working on. Someone calls while I am in the middle of an office memo e-mail, I write it down on my paper block, rip it off and put it in my inbox.
I find it so much better then using sticky notes. It’s so simple and easy.