What it Nozbe and why do you need it?
Have you ever been in a situation where it felt like you had more things to do than you could possibly get done but had difficulty deciding what you should be doing next?
So you start working on a task...only to discover later that there was something more important you really should have been doing instead.
When you try to focus on too many things at once you will discover it decreases your productivity and burns out your brain cells.
Having a trustworthy system where you can unload everything that comes to your mind, but yet retrieve it when you need it should be an important piece in your toolkit.