If you choose to use our referral service to send a newsletter to friends, we will ask you for your friend's name and e-mail address. We will automatically send your friend a one-time e-mail inviting him or her to sign up for our e-mail list. We store this information in our e-mail database for the sole purpose of sending this one-time e-mail and tracking the success of our referral program. Your friend may contact us at 415-921-6000 to request that we remove this information from our database.