Last month a mysterious crop circle in California went viral on the internet. It generated interest after anonymous calls were placed to local TV stations. But, of course, it was not created by aliens. Instead, it was a marketing ploy hatched by NVIDIA to promote their newest microprocessor. They admitted to it during the Consumer Electronics Show in Los Vegas and said clues in Braille symbols were included in the crop circle to reveal its origin.

Read the full article here:
California crop circle revealed as marketing stunt – WBTV