Click-Through URLs. In some of our e-mail communications, we use a “click-through URL” linked to content on our websites. When users click one of these URLs, they pass through a separate web server before arriving at the destination page on our website. We may track this click-through data to help us determine interest in particular topics and measure the effectiveness of our customer communications. If you prefer not to be tracked in this way, you should not click text or graphic links in the e-mail messages.