We have created the solution most of the big sites use for their questions and answers scripts, some even use it for their support requirements!
The script is called Anova and is an
Answers Script but with loads of additional features like the users can ask and answer questions using videos and audio as well as plain text.
We have been developing Anova for over 2 years and we are currently on version 4, so if you want a script that is backed up by a large company, regularly updated and free of bugs come and check out our demo.
Anova Homepage
Anova Demo