Hi,
I did not know this, but I think it is interesting that when I first saw the Julia Sets, I actually thought it was a bunch of golden spirals, logarithmic spirals based on the golden ratios, twisting and turning upon one another.
One of the attractive things to me about fractals is that I believe structures, that are both fractal, and fractal in ratios of phi, are the most efficient kinds of structures.
For example, if we look at squares spiraling around each other infinitively,
http://www.stanford.edu/group/dahlia_genetics/2008_reports/lab_3/lab_3_pics/fibonacci_spiral.pngWe can get the squares to fit together neatly by altering the sizes of the squares. The squares in the picture grow by the golden proportion. The interesting thing is that if we can only choose one ratio by which the squares grow by, we would have to use the golden ratio in order for all the squares to cover the most amount of surface area. For this, I believe that the golden ratio is a quantification of fractals, in terms of efficiency, and this is why many things in nature, such as trees and sunflowers, would use this. For example, trees would use this to cover the maximum amount of area to gather sunlight. Sunflowers would spread their seeds accordingly to the golden ratio in order to get the most efficient seed-spacing method, etc...