You might think the arrow does nothing here. But it says that amazon.com has everything from a to z and it also represents the smile brought to the customer's face. Wow, that is quite deep.
This was a logo created for a puzzle game called Cluenatic. This game involves unraveling four clues. The logo has the letters C, L, U and E arranged as a maze. and from a distance, the logo looks like a key.
The SUN Microsystems logo is a wonderful example of symmetry and order. It was a brilliant observation that the letters u and n while arranged adjacent to each other look a lot like the letter S in a perpendicular direction. Spectacular.