Frustrating that you need to open two browser windows if you want to compare bills side by side, since it reverts to the front side when you flip between new and old.<p>As the bill itself, I could see myself missing the 5's in the corners. That's standard for pretty much every currency everywhere for a reason. It lets you quickly figure out what you're looking for, even rifling a wallet or when it's folded.<p>I guess they figure the giant "5!!!" covering half the bill will do the trick, but folded into my money clip, I only get half a number (obscured behind the clip itself) or no number at all, depending on which side I happen to be looking at.<p>Incidentally, I've been on Euros & Pounds for half a decade now, and I wouldn't be able to tell you what bill is what color, so having a big empty blueish-grey sheet of paper pointing at me wouldn't help either. My only hope in the moneyclip scenario would be to have other denominations side-by-side so I could do a size comparison.