Which tool do you use for your to-do list?
- by howitzer
I've been constantly switching tools that keep track of my to-do list:
Online account in SimpleGTD
To-do applet in my RSS aggregator
Outlook's builtin Task List
My cellphone's built-in to-do list
Post-it notes on my monitors at home and at work
Paper list in my wallet (thought about enhancing it and adding a pen like Jeff Atwood did)
Which proved most useful for you?