I made a little effort to get webdoc up and running again. I think with the forthcoming stable release of pharo it makes sense to put an documentation of the whole system online.
I took the seaside image and statically exported (almost) all content and uploaded it to the gforge: http://pharo.gforge.inria.fr/doc/webdoc.html I will spend some more time this weekend to fix the missing contents (mostly the popups)