Compare the two images. They convey the same information, point data in a constrained Geographic space. The effect changes the whole thing.
It’s an example of drawing the eye. Definitely not something to do too often, but crikey it makes an impact.
I’m using the effect here as a demo, and it will depend on your browser if you can see the animation. IE typically will not support this unless you have specifically enabled animations.
Anything Mapping 