Thanks for the clarification. I wonder if the word "wiki" might not work against you though. In my experience people's idea of a wiki is fixed on something from a decade ago. They often react with outright revulsion to the word (though granted most terms in our field such as "portal" and "CMS" have also been abused). But there have been so many examples of "wikis" that turn into woolly messes or are too technical for 'ordinary' uses to want to commit to so fail in their goal of being open for anyone. Without the traction of a Wikipedia style site I would think you might be better off using another word.