The golden ratio should not need any introduction to those who have studied math and design in school. Some designers apply these mathematical concepts to come up with more visually appealing works. This infographic from companyfolders.com covers a few golden ratio facts:
Tanos - Letter T Logo
"Paul Moffatt – Graphic Des" on Designspiration
I feel like if I think about it too long, I want to say it's not easy to read. But then I realize that I knew what it was as soon as I saw it, so obviously its working. Being recognizable is very important.