Groupon: The Fastest Growing Startup of All Time

Groupon went from zero dollars to, I think, like a billion dollars in revenue in like a year or two at the time. Groupon grew that fast not because of the US business, but because of the European business,. That was actually the Oliver Samworth clone that Groupon had to buy. And they basically said, we're going to do in Europe what you do in the United States.