When Mark Zuckerberg called for a "Space Hackathon" to decorate Facebook's massive new headquarters at 1 Hacker Way, he probably didn't expect employees to take him so literally. A few scurried up to the roof with some tar paint, and now there's a 42-foot wide QR code on the roof that's visible from space. Scanning it opens the new FB QR Code Page on Facebook which may host puzzles, jokes, and other flavor to humanize the company.