When I started Firefox today, I was directed to a survey about local news. The URL looked trustworthy, so I answered all questions best I could and tried to submit the form. It blocked, telling me that I had not answered one question :-( The question in question (pun intended) was multiple choice with more than one answer allowed. It asked me whether I would normally share local news via various social media channels. But I dislike social media so I had not selected any option. Unfortunately the survey maker required at least one selected option. Obviously there is no place in today's world for people like me :-( Result: I buckled and selected ALL options. This allowed me to complete the survey. My apologies for the unreliable survey results! Recommended solution: Please add an option "None of the above" to this question. Alternative solution (more polite, IMHO): Allow users to skip questions that they do not want to answer.