Combination of Your Personal Information</strong> </p> <p>We use the information from one portion of the Sites on other portions of Sites in our network of Sites, all of which are owned and operated by the Sierra Club, and we may combine information gathered from multiple portions of the Sites into a single user record. We also use and/or combine information that we collect off-line or we collect or receive from third party sources to enhance, expand, and check the accuracy of your records.</p> <p> <strong>Disclosure to Third Parties</strong> </p> <p>We occasionally have third parties perform services on our behalf, such as data processing, marketing, analytics, advocacy and outreach, hosting, billing, social media integration, fraud protection, etc.