Foursquare, Gilt Groupe, Airbnb are all startups that have made it big, but are they actually profitable?
Every month or two, another tech startup enters the billion-dollar club.
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? Matt Rosoff/The Atlantic.
Image via Newsweek.