This information can also be used to measure and analyse the effectiveness and reach of these ads, to help us improve and refine our marketing strategy in accordance with our legitimate interests.</li> <li>Surveys and polls: If you choose to participate in a survey or poll, any personal information you provide may be used for marketing or market research purposes in accordance with our legitimate interests.</li> <li>Diagnostics, research and development: We use personal information for internal research and development purposes, to help diagnose system problems, to administer our websites, to improve and test the features and functions of our Services, to develop new content, products and services. To carry out testing and analysis.