"paper lists are just more practical. They've given us six reasons why paper beats web; mostly, it comes down to convenience (I really don't want to boot up the PC every time I need to look at my list!)"
I tend to agree. I've tried many computer-based todo list solutions, but unless it is the most simplistic method (a running text file of current todos), the complexity involved with checking the list sometimes defeats the purpose, unless the list is complex enough to warrant some sort of meta features a simple piece of paper wouldn't be able to provide. I've been liking the flyspray product over the past year or two.