Getting tough on Power Couponers?

If you need to borrow a cup of, well, anything, Cassie Howard is your girl.

With dozens, sometimes even hundreds, of individual products in storage at any given time, the Mississauga, Ont., woman's basement is a veritable grocery store. And all because of coupons - shopping tools with which the 25-year-old is so skilled, you'd expect her to whip them from a holster instead of a binder.

But where once getting something for nothing was viewed as an art, "extreme couponing" now has fellow consumers cringing, and stores scrambling to tighten their redemption policies.