Questions plugin for Elgg Community

I have dreamed always to have a “questions and answers” website like Yahoo Answers, it would be great idea to generate community written posts from simple questions. Darren have talked about this idea in one of his recent posts, he is supporting my way of thinking because the idea is depending on generating content provided by community members discussions.

there is some more information about this in my blog, plz read it, maybe you will find it useful or you can help me on it.