This. Because if my task list isn't in lots of places then it will not be used. A pretty interface to a text file would be fine, but I also want that text file catted out when I open my terminal and accessible to edit on all of my computers. Simplification is one thing, but some features are too important to leave out. In a way, comparing to Dropbox is a very unfortunate choice.

I use a repeating "all day" event in Google Calendar, which I can easily update via Web or mobile. Added benefit: I can email it to myself every morning, to see what's on deck.

In the past I've used .txt scratchpads and note files in the old Palm/Palm desktop application. I've tried various To-Do apps, including the one that works with Google Calendar, as well as the Palm To-Do list, but they never quite worked for me. I found activating priority, expiration dates and other app settings generally got in the way.

For some reason my iOS device can't edit a .txt file from Dropbox... silly :( Evernote for me.