OT sidetracked sisters

Does anyone use the Sidetracked Sisters' methods? (It is sort of like GTD in that they advocate putting what you need to do on index cards. You file by date or day of the week so that when the item needs to be looked at again, it will automatically appear in your card file on the day you wanted to review it.) They are one of the original SHE's (Sidetracked Home Executives)

Here is one of their sites:

http://www.shesintouch.com/

I was thinking of implementing the card file with Bonsai.

-- 
Brenda