A pixel tag (also known as a web beacon) is a piece of code embedded in the Services that collects information about engagement on the Services. The use of a pixel tag allows us to record, for example, that a user has visited a particular web page or clicked on a particular advertisement. We may also include web beacons in e-mails to understand whether messages have been opened, acted on, or forwarded.</li> <li> <b>Flash Cookies</b>.