I'll tell you what I know... mk and I (and a few others I won't name) used to play a lot of D&D when we were young. mk has also developed a role playing game (that is awesome IMHO) Regarding who has or does not have access to d20... I don't know - I thought anyone would have it. I don't think it has anything to do with donations though - I think the style sheet is older than donation functionality. If memory serves correctly... d20 also used to look different, and MAY have been part of Hubski's April Fools contribution to the internet... there was a rather "middle earth" looking style a while ago... I think this might have been it. My memory is rubbish for this kind of thing though. As ar as the 404 page and the other pages for broken links... it's just mk being cool like that.
I believe you're thinking of Illuminated, from April Fool's 2 years ago.If memory serves correctly... d20 also used to look different, and MAY have been part of Hubski's April Fools contribution to the internet... there was a rather "middle earth" looking style a while ago... I think this might have been it. My memory is rubbish for this kind of thing though.