I guess the message is that what the author is sharing is common knowledge since the 70's. With the invention of the electron microscope people started looking at everything, including leaves, discovering what the blogger at hand shares here. http://en.wikipedia.org/wiki/Lotus_effect

Nowadays there are hundreds of companies that sell materials or sprays taking advantage of this (or related) effects. For example http://www.hydrobead.com/ http://www.ultraeverdrystore.com/

Still it's always cool to see high fps cameras in action.