had a similar idea a long time ago (ie. ~2 years) and it was called askcue.com (still online). question sites like these face a huge chicken and egg problem, because you need people asking and answering... sorry to break it to you, but you've ventured into a very competitive and difficult (answers.com, answers.yahoo.com, quora.com, askreddit, formspring.me) section on the internet. still, best of luck to you!