It couldn't have been announced at a better time. On the 40th anniversary of man landing on the moon, some money-grubbing inventors have proclaimed their desire to capitalize on the moon's massive amount of advertising real estate using Shadow Shaping robots.
But, let's cut them some slack. According to their website, MoonPublicity.com, there are greater values than simple monetary gains (otherwise it would be "unethical")...
"Creating images on the Moon provides a commercial incentive for turbo charging space travel technology. Shadows are only the beginning. These advancements will eventually place robots on other worlds building space stations and planting crops.
Shadow Shaping only works during partial phases of the Moon. The full Moon will always be the same. If shadows form a logo during a quarter moon, it will be a small price to pay for saving mankind."
UPDATE: I noticed a comment that appeared, and quickly disappeared, on their YouTube video from "MoonPublicity" around 12:00 AM EST this morning that said ads could take years to produce depending on the size of the graphic and number of robots.