The use of a pixel allows us to gauge the effectiveness of certain communications and of our marketing campaigns.</p> <p>If you do not want to receive tracking pixels, you will need to disable HTML images in your email client, but that may affect your ability to view images in other email that you receive.</p> <ul> <li>http://google.com/settings/ads</li> <li>http://www.networkadvertising.org/managing/opt_out.asp</li> </ul> Email <p>We do not sell or give your email address to other companies for their own marketing purposes without your permission.