This size, below, is great for 4 X 6 photos OR, in this case, medium sized coupons :)
Next, you got your basic wallet sized photo page, perfect for coupon "cards"
And, finally, for your full scrapbooking page or big coupons, a 8 1/2 X 11 sheet
To try to keep a record of what I've got, what the "offer" is, and expiration dates, I just made a list and when I've used a coupon or it's passed the expiration date, I just scratch it out (very lo-tech!). Since there's not a pocket in this binder, I taped in a pocket divider to keep my list in. And, finally, on the outside of each coupon pocket, again, extremely lo-tech, I taped on a piece of post-it label with the expiration date pencilled in, then just erase it or scratch it out when I put a new coupon in.
Ta Dah! Proof Positive that I'm a true organizing dork...lol! I'd love to hear any suggestions on how to make this a better system or, even better, what has worked for you.