John Lee wrote:
Having said that, I still don't understand why the MediaWiki patch was rejected. Why is it not sensible to allow MediaWiki installations to nofollow interwiki links? It's a feature someone out there might conceivably want.
It's conceivable, but probably fairly unlikely. Interwiki links, by their nature, are incredibly unlikely to be spam (although there are a lot of prefixes in the default table that are, in my opinion, utter crap). Still, the patch is available if a user is genuinely concerned about it.