EVE Online at the moment, you're running it for free. If you're developing an application for the game, you're doing it for free. This isn't unusual, really -- pretty much any fan-developed application or service is done free of charge. But that's soon to change for fans of CCP's cutthroat game, as a new developer blog outlines upcoming changes that will allow developers to charge for services, applications, and website access.
For a $99 license fee, developers and service providers will be able to sign up and start charging money for their products while having full access to the EVE Online API. The entry itself goes into more details on the restrictions of the program and what it will mean for non-commercial sites (which will not be required to pay any sort of fee). It's an interesting move, one that means that the game will be able to develop a more robust real-world economy to complement the in-game activities.