I'm torn.
I like to think the Harvard sucks prank was pretty cool because it took a lot of thought to pull off:
http://www.harvardsucks.org/
However, someone probably stumbled onto the inherent flaw in locks and... well, you have an easy hack that didn't take much planning. I wonder if this hack is totally legit or one of those "razors in the apple during halloween" type thing people should be afraid of.