We collect IP addresses for site security and to help us understand how people use our sites so that we can improve our sites and our users' respective experiences. For similar quality reasons, we use a feature known as a ""cookie."" Cookies contain bits of information that websites transfer to your computer's hard drive for record-keeping purposes. Cookies can make the Web more convenient by storing information about your preferences on a site. Although we may assign your browser a cookie, the cookie does not tell us who you are. Only you can tell us that. We discuss cookies later in this Privacy Statement. 