Hi clebermarcel,
You should consider deploying a Wiki platform. I think you'll find all the web 2.0 features you are looking for. You can use this free software wiki package - http://www.mediawiki.org/wiki/MediaWiki.
This platform is helpful in my office, we use it for the same purposes as you are interested in.
The search for people who can answer your question continues for as long as needed - until you find the answer you were looking for.
When an answer is posted by someone who was invited (byYedda or by yourself) to answer your question, their answer is marked with a yellow "invited by Yedda".
To be invited to answer other people's questions in your areas of knowledge and interest, be sure to list your favorite topics:
» My Settings › My Topics.
Of course, the more helpful your answers are, the more likely you are to be invited to future questions...
