Remember The Milk
Three words: RTM for GMail. If you have my problem – always checking GMail and never getting anything done – RTM is the Get-Things-Done system for you. It snugly fits into the right-hand side of your GMail inbox, conveniently covering up all those annoying ads, shining a ToDo list torch in your eyes every time you procrastinate in front of your web browser (but only Firefox 2.0 and up are supported).
The website interface further allows you to map ToDo items to locations, records postponements, etc. Should you be feeling extra geeky, you can share tasks with friends, because that’s exactly what friends do. Conveniently, the service provides an iCal feed, so you can set those undone list items to haunt you in a variety of clients. For $25 per year, MilkSync will push calendar items to your iPhone or Windows Mobile device.

