Jeff Glueck - Start charging early
First, Foursquare decided to start treating its data like the valuable property it is. It asked those big companies to start paying for its API.
The developers on the other end of the line basically laughed and said, “Yeah, we were wondering when you were going to start charging.” Crowley was amazed. “I had never had that experience in extracting dollars from big enterprise customers, but thankfully we had people here who knew how to do that.”
— Jeff Glueck