http://checklisthub.com/ was actually the reason my partner and I stopped working on a keyboard friendly todo list. I figured it was basically everything I wanted, and it was already built. Great work, and thanks for open sourcing it now.
I don't plan on expending much effort to market this. My primary desire is to get contributions. My next desire after that is to finally be able to get this installed behind the firewall at the company where I work. It'll be cool if the public site gets really popular, but honestly I don't know how to go about making that happen. It would be personally gratifying to see web dev checklists created by other folks which I can clone and use myself :)