I would have a hard time getting by without Remember the Milk, especially for recurring tasks. (lawyerist.com)
The truth is that your time is filled with lots and lots of recurring tasks that you never had to deal with before. (rookiemoms.com)
I use it for both my work and personal writing, and I've set recurring tasks for things I need to remember to do every day or week. (floridawriters.net)