Roger Guitar (yes, that's his actual name) kept all the receipts for the cash transactions he'd made since February 4th, 2013, when the Canadian government abolished the penny, all 365 of them. He then calculated how much he won or lost through the rounding to the nearest five cents that became the norm. The end result? He's 89 cents richer than he would've been had the copper-coated crap stayed around. Yeesh, 89 cents over fifteen months. I make that much in less than four minutes at work.
So if anyone south of the border is still concerned about getting rid of their own penny for any reason other than the whole Lincoln thing (and let's be frank, do you really think Lincoln would like being associated with worthlessness incarnate?), there you go. Not to mention, there's no rounding going on in transactions done using debit or credit cards (other than to the nearest cent, of course) to start with.