Hacking MediaWiki to map client certificates to IP addresses turns out to be
quite trivial. nym-0.3 includes the 17 line patch, as well as the security
fix proposed by cyphrpunk. The live demo at erg.no-ip.org now includes a
live, patched MediaWiki called NymWiki.
If you want to be able to edit wikipedia through tor, I suggest you try out
the code and email me, so that we can make a case that there's actual demand
for inclusion of the patches.