Wiki.Answers.com lets people submit and answer various questions
About Wiki.Answers.com
Answers.com is the place where reference information and Q&A content come together to deliver the best answers on the Internet. ReferenceAnswers is a one-stop shop that aggregates dictionaries, encyclopedias, atlases and more, offering millions of topics available for fast-fact lookup as well as deep research. WikiAnswers is an advanced Q&A platform powered by the collaborative efforts of a global knowledge community... with a wiki-twist.
Languages
WikiAnswers has recently made a couple new international sites:
They are currently in the process of adding more international sites.