If there’s a kind of renting out your house when you are away from home, now, there is renting out your desk while you’re out for lunch, or out for coffee break.
Google has this map of Pokemon Challenge. Press play and enjoy!
There are more! Check it out here: http://blogs.wsj.com/personal-technology/2014/04/01/techs-best-2014-april-fools-jokes/