A Russian spacecraft designer by the name of Alexander Lavrynov has apparently patented a device for creating advertisements in space which would be visible from Earth.

Multiple linked satellites would use sunlight reflectors to create advertising messages in the night sky.

This could perhaps be the most obnoxious form of advertising yet invented. It would finally mean there is absolutely no way for any person on the planet to have a break from commercialism.

I'm sure amateur and professional astronomers would also have plenty to say about this one.