I'm having a lot of success with a wiki platform in terms of function. It ain't pretty and you can't customize the design like wordpress but it works very well in terms of categorizing information and letting me expand material, especially on setting, without using reams and reams of paper. Downside of course being it's not downloadable, but is it really that hard or uncommon to include a laptop in a gaming session these days? You want to know about a character rule? Often it's just a click away from your online character sheet.
I'm at http://thedarkrealm.wikispaces.com/ if you want to see how it's functioning.
Having said that I took a look at the 'Lady Blackbird' site and there's definitely some beautiful design work there, if only in the illustration - I think I'll be downloading whatever's there just based on the look of it. And at the risk of being impractical I do like a purdy website.