…makes list making and tracking easy. And, since it’s web-based, you can make a list at work and still get to it at home or anywhere else you have a computer or internet access (even on a mobile phone).
A nice idea, but I use my email as my To Do list: anything kept in the InBox is To Do. Gmail has a “starred” feature which allows you to easily highlight emails as well. Ta-da List can easily be shared with others, though.