Cookie Policy

Last updated: May 24, 2018

Like all platforms, we use cookies and other similar technology for the site to function, and to give you a better and more personalised 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 Facebook 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.

    We have noted the expiration time of each of these cookies to the best of our knowledge, however the expiration date of any third-party cookies is set by those companies and can be changed by them at any time.

    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 name Description Expiration Time
    _change_session This cookie allows you to stay logged in to your account After 45 minutes.
    _change_id This cookie is used to recognise your account when you revisit, and makes your log-in process easier. No expiration.
    __cfduid This cookie is used by security provider Cloudflare to mitigate potential abuse. After 365 days.
    pnctest This cookie is used by infrastructure provider PubNub to display our live map of global signatures on the Impact page ( August 1st, 2030.
    membership_view This cookie suppresses a request to become a member, if you have seen this request in the previous 6 hours. After 6 hours.
    cookie_banner This cookie helps show a banner to users in the EU about our cookie usage, and helps us remember if you’ve dismissed the banner, so we don’t keep showing it to you. After 1 year.
    gdpr_banner_dismissed, gdpr_banner_views These cookies help us show you a banner when we update our policies, and help us remember if you’ve dismissed the banner, so we don’t keep showing it to you. After 90 days.

    Preference Cookies

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

    Cookie name Description Expiration Time
    _change_lang This cookie displays the right country and language version of the platform for you. After 1 day.
    app_meta_* This set of cookies is used to understand registered users’ actions on to show you content that is most relevant to you. No expiration.
    uuid This cookie is used to understand a guest user’s actions, before they become a registered user. After 8 hours.
    skip_contribute_redirect_to This cookie tailors the petitions and other asks we show you after you sign a petition. After 1 hour.

    Social Media Cookies

    Social media cookies collect information about social media usage. If you’ve signed in on through Facebook connect, you are likely cookied by Facebook. You should be able to modify or change those cookies through the settings on your social media account.

    Cookie name Description Expiration Time
    fbm_* This is a Facebook cookie that helps us determine which of our users have chosen to connect their account to their Facebook account. After 1 year.
    fbsr_* This is a Facebook cookie that helps users who choose to connect their account with their Facebook account through the log-in process. After 1 year.
    vk_app_* This is a VK cookie that enables users to share content on the social media platform VK. After the share is complete.
    dont_auto_login_via_facebook This is a Facebook cookie used to protect your privacy, to ensure that once you logout from Facebook, you are not able to autolog back in. After 1 hour.

    Analytics Cookies

    Analytics cookies collect information about the use of the platform, and enable us to improve the way it works. For example, analytics cookies show us the most frequently visited pages on the platform, and analyze site traffic. We use them to look at overall patterns of usage on the platform, rather than the usage of any particular individual.

    Cookie name Description Expiration Time
    ga_first_visit This Google Analytics cookie is used to help us understand your traffic source (for example, email, or Facebook) and to remember what browser you used for your first visit to After 25 years.
    __utm* This is a set of cookies used by Google Analytics to understand the device you are using to access Ranges from after 10 minutes to 2 years.
    _ga This is a cookie used by Google Analytics to understand patterns of user activity on This cookie expires after 2 years.
    optimizelyEndUserId This is a cookie used by Optimizely to store a site visitor’s unique Optimizely identifier, which is comprised of a timestamp and random number. After 6 months.
    optimizelyRedirectData This is a cookie used by Optimizely in order to conduct redirect experiments, which stores various data from the original page so that Optimizely still has access to it on the new page. After 5 seconds.
    _px* This is a set of cookies used by PerimeterX to help identify and block bots. After 30 minutes, or the end of the browser session.
    _hj* This is a set of cookies used by Hotjar to help identify you, identify how you have interacted with us (e.g. our surveys), and to improve your site experience as a result of those interactions.

    _hjClosedSurveyInvites, _hjDonePolls, _hjMinimizedPolls, _hjDoneTestersWidgets, _hjIncludedInSample, _hjShownFeedbackMessage, _hjid After 1 year.
    _hjRecordingLastActivity, _hjTLDTest, _hjUserAttributesHash, _hjCachedUserAttributes After the end of the browser session.
    _hjLocalStorageTest No expiration.
  3. How do I manage cookies?

    You can disable essential, preference, and social media cookies through the settings on your browser. You may wish to refer to for information on commonly used browsers. You can follow the instructions on your browser’s help page or their website to remove the cookies set by our site and other sites. You can also choose to block our site and other sites from setting these cookies in the future.

    To opt-out of analytics cookies by Google Analytics, please go to

    If you want to clear all cookies left behind by the websites you have visited, here is a link to a program that clean out tracking cookies: These opt-outs may be provided through the use of specific tracking opt-out cookies. Please note that if you get a new computer, install or upgrade a browser, or erase or otherwise alter your browser’s cookie file, this may also clear the opt-out cookies.

  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!