a poll: managing to-do lists? ...

I think I want a new way to manage my to-do list. Usually I just keep one or several files called TODO, often in project-specific directories... but they get out of date, they're scattered across different computers, they're not public (so people can't be like "why are you so slow on task X?!", or at least I can't be worried that they might)...

What do you guys think? What do you do? What do you recommend?

[Poll #914662]