This also (to me at least) suggests that a Wiki might be a useful format if you wanted to allow it to accrete random bits of vaguely-related information from the sorts of people who'd be likely to read it.

(The only major downsides are that such a beast would require some maintenance (at least enough to counter any annoying sabotage); and that, judging by my publicfile logs, there are more than a few security holes (of the embarrassing "request a URI ending in '|cat_;_nastycommand_;_nastycommand'" variety) in some of the standard Wiki software.)