I never said it was the best form, but obviously one that is already being utilized and overlooked as well. r u serious?
How is it a good form of communication in any way? And what makes you think these are made by aliens?
Furthermore, what makes you think you can find UFOs by running around at night with some night vision goggles while men of science struggle to find any sort of evidence that aliens have ever visited the Earth?
Oh wait, let me guess... all scientists work for the Illuminati?