I've been iterating on this with Trello in my personal life for about a year now. It's depressing to see all the things I intend to do and am not getting done for one reason or another, but I am dropping far fewer things on the floor than I used to.
Here you can see all the things I haven't done on time: http://kb.commits.to/ and the backlog of things I already did, of course, too, but I like to focus on those red things at the top of the page.
This is a beta thing that will probably go 1.0(/2.0?) soon, there's no signup page, don't look for a signup page...
I've been using something similar and I've found it decreased my anxiety with the things I want to get done. I've found that splitting things based on the GTD philosophy helped me reach the right state of mind.
