the Ruby User's Guide

On http://www.ruby-doc.org/docs/ there's a link to "Ruby Users Guide
(updated 200 Sept. )" which points to
http://www.ruby-doc.org/docs/UsersGuide/rg/ (sidenote: that link text
needs an apostrophe and the year corrected)

On the ruby-lang.org site, the link pointing to the User's guide is
http://www.rubyist.net/%7Eslagell/index.html, and the user's guide you
get from there is
http://www.rubyist.net/%7Eslagell/ruby/index.html.

Which one's newer? Or are both currently being maintained?

Regarding formatting, personally I like the one at ruby-doc better
(less contrast, too much red in the other one), though one problem I
see with both is that the irb snippets are syntax highlighted whereas
the code samples are not.

Thanks,
---John