I am still setting up my forum and just realised that I could use the prefix-system as a category-system. Instead of having: category 1 subforum 1 subforum 2 category 2 subforum 3 I could use: forum 1 prefix 1 prefix 2 forum 2 So there would be no categories at all. That would save a page-load. But would the second system require less resources then the first system? I was thinking it might... Like in query-load maybe or in complexity of searches. Or maybe the opposite? Or it wouldn't really matter.