Google's Cardboard turns your Android device into a VR headset : $2 Billion : I do believe Google Is Having Some Fun at Facebook and Team Vomit Machine's Expense

Zuckerberg, you sap
you can buy one of
these for a dime. No wonder Luckey's goal is
to give Oculus away.

http://www.forbes.com/sites/erikkain/2014/06/26/google-cardboard-is-googles-awesomely-weird-answer-to-virtual-reality/