Every month or two, another tech startup enters the billion-dollar club.
How Well Do You Know Football?
Try Locavesting to Raise Money
The Grace of Sumo Wrestling
News stories dutifully report the amount of the round and the names of the investors, along with the new valuation number.
But a lot of times, a more fundamental question is left unanswered: How do these companies actually make money? Do they make money?
Here are the answers: The business models of 10 tech companies who haven't yet filed to go public but are reportedly valued over $1 billion -- along with one company, Foursquare, that's getting close to that number.
It's a mix of straight e-commerce, transaction brokering, and advertising.
This article available online at: