Honestly I'm not convinced it's worth the amount of work involved in doing all this, and the number of places available for people to share tips/tricks/etc. has drastically increased since 2005. So if it were up to me the wiki would either go away, or become read-only with prominent "only for historical purposes, don't use information here" warnings.
i was meaning probably more in a general sense, not so much for this particular page. the notice at the top of that specific entry does the trick. a notice at the top of all wikis which aren't intended as the 'official word' indicating such would mitigate a bit of this sort of confusion.
But I'll think it over.