Pixel tags and other technologies. Clear GIFs are tiny graphics with a unique identifier, similar in function to cookies. However, in contrast to cookies, which are stored on your computer’s hard drive, clear GIFs are embedded invisibly on website pages. We may use clear GIFs (also known as web beacons, web bugs or pixel tags) in connection with the Site to, among other things, track the activities of our Site visitors and compile statistics about Site usage and response rates. We and our third-party service providers also may use clear GIFs in HTML-formatted e-mail messages to help us track e-mail response rates, measure the success of our marketing campaigns, and identify when our e-mails are viewed or forwarded.