What is that on https://docs.google.com/forms/d/e/1FAIpQLSeZbgB_Sivh5QMqTOqBaQiEApcCIF0uVNOLxf3_yn0Bz8_U3g/viewform
"What's your Bitcointalk.org profile link?"
"Referrer's username in ArcBlock Telegram community"