That is just plain wrong. Check the privacy policy: https://flattr.com/files/privacy_policy.pdf https://flattr.com/files/privacy_policy.pdf The extension keeps

That is just plain wrong. Check the privacy policy: https://flattr.com/files/privacy_policy.pdf https://flattr.com/files/privacy_policy.pdf The extension keeps everything locally, only the information necessary to make payments is transferred. There is even a blacklist in place that prevents any information about sensitive sites (online banking, mail accounts, other adult content) from ever being stored. Here is a blogpost about it: https://blog.flattr.net/2017/06/key-elements-of-the-new-flattr-the-all-knowing-privacy-friendly-algorithm/ https://blog.flattr.net/2017/06/key-elements-of-the-new-flat...