Instagram Founders resign six years after $1 billion Facebook sale

Kevin Systrom and Mike Krieger, Co-founders of photo-sharing app Instagram, have resigned from Facebook, reportedly over growing tensions with Facebook CEO Mark Zuckerberg. "We’re now ready for our next chapter. We're planning on taking some time off to explore our curiosity and creativity again," said CEO Systrom. Launched in 2010, Instagram was acquired in 2012 by Facebook for $1 billion.