well, it looks interesting but there a couple of problems. The first is that there are no facts on this yet (at least not in the few sections I bothered to check) which makes it less likely that I would use it as a reference in the future. I'm also not sure the search works well for this type of site. It's a wiki search which means that if I type something like memory in the search box I'll get back the memory page as opposed to a list of all the pages that contain the term.
Given that this is a reference site search needs to be made more visible and perhaps changed a little bit. I assume as the number of facts grow it's going to be impractical to navigate some hierarchy to look for some particular data. Some of this facts also don't fit particularly nice in any one category. Maybe some sort of tagging might help as a way to categorize the data (or just really good full text search).
Given that this is a reference site search needs to be made more visible and perhaps changed a little bit. I assume as the number of facts grow it's going to be impractical to navigate some hierarchy to look for some particular data. Some of this facts also don't fit particularly nice in any one category. Maybe some sort of tagging might help as a way to categorize the data (or just really good full text search).