How do you organize your coupons?

Colleen says:

First, I buy 4 papers each week. I separate the inserts into two piles - SmartSource in one and Red Plum (with any other inserts such as General Mills, P&G or Kelloggs). Then I put the date on the front of each pile with permanent marker. Next, I slip each pile into its own page protector. Finally, I place these in a 3-inch binder. I learned this technique from the www.couponmom.com.

All loose coupons that I've clipped from mailers, magazines, newspapers or printed from online I keep in a Mrs. A's coupon organizer.  Organized by category. 

That said, I'm thinking of switching to using the system used by www.iheartcvs.com's founder. See her system here. 

So, what do you do?