http://www.techcrunch.com/2008/12/08/gmail-finally-gets-a-to-do-list/
Good if you have to bring all into the internet, and you check your gmail every time.
It is called “Tasks” and is now available in Gmail Labs (click on the beaker icon next to “Settings” on the upper right hand corner of Gmail). When you enable Tasks, it appears as a link in the left-hand column under Contacts. Click on the link and a box pops up in the lower right-hand corner like it does with Gtalk. You can add tasks, reorder them, cross out completed tasks, switch to a new list, or pop out the box to keep on your desktop.
Good if you have to bring all into the internet, and you check your gmail every time.






