Cookie Policy

Last updated: July 26, 2021

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
    dont_auto_login_via_facebook Used by to allow users to disconnect their FB account.
    country Used by to show users content specific to the country set in their profile.
    cookie_banner Used by to store cookie preferences.
    membership_view Used by to personalize membership program signup options to be displayed.
    _change_id Used by to track user state and login.
    app_meta_ppmu_ty_receipt Used by to track various user preferences, such as banner dismissals, promotions, and unsubscriptions.
    __cf_bm Used by CloudFlare to prevent certain attacks (DDoS) and other security risks.
    fbsr_* Used by Facebook to facilitate login and sharing on
    _ga Used by Google Analytics to distinguish users on multiple platforms (e.g.,,,,
    G_AUTHUSER_H Used by Google to facilitate login and sharing on
    HSID Used by Google/YouTube to track Google account ID and the most recent sign-in time for security purposes.
    optimizelyOptOut Used by Optimizely to include or exclude a user in experiments per their consent.
    enforce_policy Used by Paypal to provide payment options and security.
    _px3 Used by PerimeterX to detect fraud and bot activity.
    __stripe_mid Used by Stripe to prevent fraud.
    cid Used by Stripe to provide payment options and security.
    VISITOR_INFO1_LIVE Used by YouTube to measure internet bandwidth to determine if user gets new or old Youtube player interface.

    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
    app_meta_petition_interrupt_first_view_date Used by to track a user’s exposure to particular user flows and how many times they have shown said flows.
    app_meta_privacy_policy_banner_dismissed Used by to track a user’s preference and times seen regarding banners, inclusive of policy update banners, GDPR compliance banners, and customer satisfaction survey banners.
    app_meta_phone_collection_dismiss_ Used by to track a user’s preference regarding banners, inclusive of banners asking for updating certain contact information.
    app_meta_public_signature_ Used by to track a user’s signature display preference.
    skip_contribute_redirect_to Used by to track user preference for product flow.
    fbm_* Used by Facebook to store account details.
    NID Used by Google for preferences tracking.
    remixdt 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.

    tmr_detect Used by VKontakte (VK).

    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
    Experiments_* Used by for experiments to evaluate our product.
    __utm* Used by Google Analytics to distinguish users and sessions.
    _gat* Used by Google Tag Manager to throttle request rates.
    ga_first_visit Used by Google Analytics to remember the traffic source and browser of users’ first visit to the site.
    _hjCachedUserAttributes Used by HotJar for user surveys and other user research functionality.
    optimizelyRedirectData Used by Optimizely to run Change product-related experiments.
    __stripe_orig_props Used by Stripe to analyze and improve their payment services.
    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
    SAPISID Used by DoubleClick for ads on Google/YouTube.
    _gcl_au Used by Google Tag Manager to store and track conversions.
    __Secure-3PAPISID Used by YouTube for ads on Google/YouTube.
    _uetsid Used for ads on Bing.
    _fbp Used for ads on
    1P_JAR Used for ads on Google.
  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!