You can choose not to provide certain data to us, but you may not be able to use certain features of the Site.</p> <ul> <li>To stop receiving promotional communications from us, you can opt out by using the unsubscribe mechanism in the promotional communication you receive or by changing the email preferences in your account. Note that regardless of your email preference settings, we will send you transactional and relationship messages regarding the Site, including administrative confirmations, order confirmations, important updates about the Site, and notices about our policies.</li> <li>