Mat,
Loki and the Skyhook SDK are free for non-commercial use. If you have a
commercial application for it, please feel free to contact us at
sa...@skyhookwireless.com and we can work out some agreement that fits your
revenue model.
The Terms of Use are laid out when you register for an API key for Loki or
download the SDK for Skyhook.
Let me know if you have any more questions or you can email me directly at
rsa...@skyhookwireless.com.
Best, Ryan