Originally Posted by Gatorade Frost

I'm pretty sure for that kind of thing you would have to look at specialty sites, like a Halo Encyclopaedia site.

Allowing people to post their speculations and observations sounds like a blog to me, not necessarily encyclopaedia sites. I think your best bet would be looking around for sites looking specifically at each interest in depth and that allows guesswork and opinion work alongside the actual published fact (or lack thereof)