Pixel Tags / Web Beacons: Pages of our website and our emails may contain small electronic files known as web beacons (also referred to as clear gifs. pixel tags and single-pixel gifs) that permit us, for example, to count users who have visited those pages or opened an email. We may also use these web beacons for other related Site and email statistics (e.g., recording the popularity of certain content and verifying system and server integrity).