Our Sites, and some of our e-mail communications, may from time to time contain small electronic files known as beacons (also known as web beacons, clear GIFs, pixel tags, single-pixel GIFS) that permit us, for example, to count users who have visited those pages or opened an email communication, and for other related statistical analysis. Beacons in email marketing campaigns allow us to track your responses and your interests in our content, offerings, and Sites.