Zappos.com tour guide Erika Newman (right) shows off the ball pit in the human resources department of the company's Las Vegas headquarters. Zappos eliminated managers and embraced a system of self-governance known as holacracy. Sacramento Bee/TNS/Landov hide caption

itoggle caption Sacramento Bee/TNS/Landov

The call center of Zappos.com gets high marks from consumers for strong customer service. Shashi Bellamkonda/Flickr hide caption

itoggle caption Shashi Bellamkonda/Flickr