Ghostery does not sell user data. Our rewards are locally run and private by design. Rewards are optional and can be turned on or off at any time. We are open source and our code can be viewed here: https://github.com/ghostery/ghostery-extension. More information about Rewards can be read here: https://www.ghostery.com/faqs/what-is-ghostery-rewards/. Please reach out to us at support@ghostery.com for more information.