The original link for this submission is truly amazing. I guess it will eventually be changed, so to preserve it for posterity: https://accounts.google.com/Ser

The original link for this submission is truly amazing. I guess it will eventually be changed, so to preserve it for posterity: https://accounts.google.com/ServiceLogin?passive=1209600&continue=https://apps.google.com/supportwidget/articlehome?hl%3Den%26article_url%3Dhttps://support.google.com/a/answer/2855120?hl%253Den%26product_context%3D2855120%26product_name%3DUnuFlow%26trigger_context%3Da&followup=https://apps.google.com/supportwidget/articlehome?hl%3Den%26article_url%3Dhttps://support.google.com/a/answer/2855120?hl%253Den%26product_context%3D2855120%26product_name%3DUnuFlow%26trigger_context%3Da&hl=en https://accounts.google.com/ServiceLogin?passive=1209600&con... URL #1: https://accounts.google.com/ServiceLogin?passive=1209600&continue=<URL> https://accounts.google.com/ServiceLogin?passive=1209600&con... Redirecting to URL #2: https://apps.google.com/supportwidget/articlehome?hl=en&article_url=<URL> https://apps.google.com/supportwidget/articlehome?hl=en&arti... Redirecting to URL #3: https://support.google.com/a/answer/2855120?hl=en&product_context=2855120&product_name=UnuFlow&trigger_context=a&followup=<URL> https://support.google.com/a/answer/2855120?hl=en&product_co... Bonus URL #4 also included in the query string: https://apps.google.com/supportwidget/articlehome?hl=en&article_url=<URL> https://apps.google.com/supportwidget/articlehome?hl=en&arti... And bonus URL #5: https://support.google.com/a/answer/2855120?hl=en&product_context=2855120&product_name=UnuFlow&trigger_context=a https://support.google.com/a/answer/2855120?hl=en&product_co... Also, 2 different ways of URL encoding special characters, i.e. "=" is %3D and %253D (encoded twice).