yeah, you're right, but I don't know how to improve search engines, they may prefer to refer to old, outdated and dead links.
But anyway, the manual is there and it also comes with the software!!! People should easily find it in the software menu itself without the need of an internet connection. But it is also online, and as far as searching for pd related stuff goes,
puredata.info comes on all the time. It is the first result that I get, by the way if I search for "pure data manual" on google.
I guess we can use put more up to date information and resources in
puredata.info as it is the central community page and comes around first.