Are there anyone using stackexchange like Q&A for their product? How great has it been in building a community of helpers and engaging the user in how to use your software? I plan on making a Q&A section with running something like stackexchange software.
If you are using something like stackexchange for Q&A, which one are you running? open source or paid?
Check the link below.
http://meta.stackoverflow.com/questions/2267/stack-overflow-clones You can choose one for your site.