Speaking of Kroger, if you haven't checked out the P&G eSaver, you should. It's basically paperless coupons that you load onto your shopping card and automatically deduct at the register. Pros? You can combine them with paper coupons to double your savings (many of the coupons are the same as the monthly P&G insert). Cons? I don't like having to keep a list of which coupons are on my card.
I don't see much that's worthwhile on their site at the moment, but I try to keep an eye on the coupons when they post new ones.