Funfact: Firefox already had a Facebook sidebar and integration back in 2012! https://blog.mozilla.org/en/mozilla/firefox-introduces-new-social-api-and-previews

Funfact: Firefox already had a Facebook sidebar and integration back in 2012! https://blog.mozilla.org/en/mozilla/firefox-introduces-new-social-api-and-previews-integration-with-facebook/ https://blog.mozilla.org/en/mozilla/firefox-introduces-new-s... The Social API was later removed though because it was wildly unpopular (unrelated but man look at the good macOS and Firefox design in the screenshot...)