The major driving point behind the Great PDA Search of 2003 was to give myself a good way to manage my todo list with regards to my properties, as I tend to lose track of all the tasks I need to do. I've been thinking about how I'm going to do it most efficiently even after I get the PocketPC, and wouldn't you know it, other people have the same problem. :) Dave Thomas (of pragmatic programmer fame) has a great idea!
The only thing about this is how to manage some of the metadata associated with tasks, such as when you completed it, time it took, money spent to complete it and perhaps some other stuff. I suppose that if I wrote this in RSS, then wrote a little app that allows me to add some metadata to the RSS file, it would work. I'm going to have to look into this a bit more.