It's amazing how much of this boils down to "If you make sure people know about things, people know about things!".<p>I mean it happens over and over in the article "Remember, you can default to double sided", "Did you know about this savings program?", etc.<p>Still, love the idea, and I hope they keep it up. It sounds like it's had some really positive effects so far and what's the point of the scientific method of testing and evaluation if you never use it?