We use collected information to test, develop, and troubleshoot issues with, or to improve upon or maintain our Services. This may include information we collect from surveys or research, in addition to other collected information. </li> <li> Monitor and analyze trends and provide analytics. We use information to monitor and analyze trends and usage of our Services. We may also use collected information to help advertisers measure engagement and effectiveness of their ads, and how people interact with them or their services. See How We Share Information below for more details. </li> <li>