"Oliver and his two brothers are known for elevating the practice of cloning American business models in Europe into an art form," wrote CEO Andrew Mason on Groupon's blog. "But…we realized that they were among the best operators we'd ever met."

"I'm on drugs for growth," said Oliver Samwer. "The fast growth. Formula 1, not golf."

Read this Inc. profile on the German tech copycat mogul Samwer.

H/t D'arcy