Cookie Policy

Last updated: December 9, 2020

Like all platforms, we use cookies and other similar technology for the site to function, and to give you a better and more personalized experience of This policy outlines which cookies we use, and explains how you can manage them.

  1. What is a cookie?

    Cookies are standard features of websites that allow us to store small amounts of data on your computer about your visit to the platform. They help us learn which areas of the platform are useful and which areas need improvement.

    On, we use cookies for many things, which we explain in detail below and which include:

    • to remember your preferred language and country;
    • to help you log in again when you revisit the platform;
    • to connect your account to your social media account, if you choose to do so;
    • to help our engineers improve the platform, by understanding how people find us and what devices they’re using.

    The section below, titled “How do I manage cookies?”, outlines the choices you can make to control cookies. However, if you disable cookies and similar technologies, your experience on the platform may be diminished and some features may not work as intended.

  2. What cookies do we use?

    Below we list the different types of cookies that may be used by Our Privacy Policy complements this Cookies Policy and outlines how any information that may be collected from cookies is used.

    Essential Cookies

    Essential cookies enable you to navigate our platform and to use our services and features. Without these cookies, our website and platform will not perform as smoothly for you as we would like, and we may not be able to provide certain core functions and features of our platform.

    Cookie Use / categorization rationale
    _change_* Necessary to track user state and login.
    app_meta_* Necessary to provide users with receipts and tracking unsubscribes.
    cookie_banner Necessary to store cookie preferences.
    membership_view Used to suppress membership signup option for existing members.
    uuid Necessary for tracking user state and login.
    country Used to track the country a user chooses in order to show them content specific to their chosen country.
    _px* Used by PerimeterX — necessary for fraud and bot detection.
    __cf* Used by CloudFlare — necessary to prevent certain attacks (DDoS) and other security risks.
    dont_auto_login_via_facebook Necessary to allow users to disconnect their FB account.
    HSID Google Security Cookie — contains encrypted record of Google account ID & most recent sign-in time. Used for security purposes.
    VISITOR_INFO1_LIVE Measures bandwidth to determine if user gets new or old youtube player interface.
    l7_az Paypal cookie — necessary to provide payment options and security.
    __stripe* Stripe cookie — necessary to provide payment options and security.

    Preference Cookies

    Preference cookies collect information about your choices and preferences, allow us to remember language or other local settings, and customize your experience accordingly.

    Cookie Use / categorization rationale
    fbsr_* These are cookies used by Facebook to facilitate login and sharing on
    G_* These are cookies used by Google to facilitate login and sharing on
    app_meta_* Used to track various user preferences such as banner dismissals.
    skip_contribute_redirect_to Used to track user preference for product flow.
    survey_banner Used to limit the number of times a user sees customer satisfaction banner.
    gdpr_banner_dismissed Used to limit the number of times a user sees GDPR banner.
    NID Used by Google for preferences tracking.
    remix* Cookies used by VK to facilitate login and sharing.
    *VK functionality on is only available to users that either use Russian as a site language on, or are located in countries where VK is prominent and popular.

    Analytics Cookies

    Analytics cookies collect information about how you use, like which pages you visited and which links you click on. None of this information can be used to identify you. It is all aggregated and, therefore, anonymized. Their sole purpose is to improve website functions.

    Cookie Use / categorization rationale
    _ga Used by Google Analytics.
    _hj* Used to provide HotJar user surveys and other user research functionality.
    app_meta_new_stack_conversion_actions Used internally to evaluate product.
    optimizely* Used to run experiments using Optimizely.
    YSC Used by YouTube to track play counts.

    Marketing Cookies

    Marketing cookies track your activity to help deliver more relevant content or advertising or to limit how many times you see an ad. These cookies can share that information with other organizations or advertisers.

    Cookie Use / categorization rationale
    _uetsid Used for ads on
    1P_JAR Used for ads on
    SAPISID Used for ads on
    Used for ads by DoubleClick.
    SSID Used for ads on
    Used for ads on
    _fbp Used for ads on
    _gcl_au Used by Google Tag Manager.
  3. How do I manage cookies?

    You can manage your cookie preferences and out-out of preference, analytics, and marketing cookies with the cookie manager.

  4. Policy updates & contacting us

    This is a snapshot of how we use cookies today; we may change this Cookies Policy if we change our use of cookies over time. The “last revised” legend at the top of this page indicates when this page was last changed. If you have questions or feedback on this policy, feel free to let us know by contacting our Help Desk or writing to the following addresses:, PBC.
    548 Market Street
    Private Mailbox #29993
    San Francisco, CA 94104-5401
    USA, PBC., located at the above address, is the company responsible for collection, use, and disclosure of your personal information under this Privacy Policy. If you prefer, you may also contact us at our EU office:, PBC.
    Carrer de Santaló, 10, 1st Floor
    08021 Barcelona

    We welcome questions, concerns, and feedback about this policy. If you have any suggestions for us, feel free to let us know by contacting our Help Desk.

    You can contact our Help Desk for any data deletion or access requests.

    If you have detailed questions about’s data usage, you may like to contact our Data Protection Team at

    Thanks for supporting change in your community — we can’t wait to see what you’ll change next!