Why do all of my questions get ignored on Quora?
Why are some questions not answered on Quora?
What questions shouldn't be answered? How many questions on Quora have been unanswered? What are the questions that can't be answered? What sort of questions should NOT be asked on Quora? Why wasn't Yahoo! answers a success like Quora is? Why did Yahoo answers fail and Quora succeed? What percentage of questions are yet to be answered in Quora? What kind of questions should not be asked on Quora? What questions have never been asked on Quora?