These third-party sources vary over time and include:</p> <ul> <li>Data brokers from which we purchase demographic data to supplement the data we collect.</li> <li>Services that make user-generated content from their service available to others, such as local business reviews or public social media posts.</li> <li>Communication services, including email providers and social networks, when you give us permission to access your data on such third-party services or networks.</li> <li>Service providers that help us determine your device’s location.</li> <li>Partners with which we offer co-branded services or engage in joint marketing activities.</li> <li>Developers who create experiences through or for Microsoft products.</li> <li>Third parties that deliver experiences through Microsoft products, such as skills related to Cortana.</li>