To administer our site and for internal operations, including troubleshooting, data analysis, testing, research, statistical and survey purposes.</li> <li>To keep our site safe and secure.</li> <li>For measuring or understanding the effectiveness of advertising we serve to you and others, and to deliver relevant advertising to you.</li> <li>To improve our site to ensure that content is presented in the most effective manner for you and for your computer.</li> <li>To allow you to participate in interactive features of our service, when you choose to do so.</li> </ul> </li> <li> <b>