Workaround:
Your own unanswered questions:
http://stackoverflow.com/search?q=user%3Ame+answers%3A0https://stackoverflow.com/search?q=user%3Ame+answers%3A0
Everyone's unanswered questions:
http://stackoverflow.com/search?q=answers%3A0https://stackoverflow.com/search?q=answers%3A0