Mozilla uses telemetry in their products to try to understand what Firefox users want. We only use telemetry to improve our products (which is directly related

Mozilla uses telemetry in their products to try to understand what Firefox users want. We only use telemetry to improve our products (which is directly related to understanding user desires), and we have a data review policy to ensure we are collecting data in an attempt to improve things for those people we collect data from. Additionally Mozilla regularly surveys samples of its user base, and conducts in-depth interviews of the public to try to understand desires.