Four Corners

I've read about this method in books on de-cluttering and Feng Shui, and I've used it in the past when it was time to move.

It works like this:
You clear one room completely out--in my case, I'm using the front room of my basement, even if it means shoving everything into another room temporarily.

I put signs up in each of the four corners:
KEEP
THROW AWAY/DUMP
SELL/DONATE
DECIDE (7 DAYS TO DECIDE)

I think it's fairly self-explanatory here. The biggest rules involved:

1. Anything in the "decide" corner is moved into one of other three the following Sunday, so that each Sunday when I begin to go through another room, pile, drawer, whatever I tackle...the "Decide" corner is always emptied first.

2. The keep pile should be the smallest pile in the room.

3. No pile shifting from Dump/donate to keep. Keep to dump/donate is allowable, however.