I wouldn't read too much into this folks. The golden ratio occurs naturally in many things but plenty of analyses of artworks work too hard to fit the neat theory to them. Many of the examples in the pics posted are good examples: the Parthenon (notice the smaller rectangle doesn't align with anything of significance) and the Apple logo.
You can use it certainly, but artistically plenty of things that 'work' - are aesthetically pleasing - don't conform to the ratio.
Einion