I don't mirror everything, usually only parts of certain sites. If there is an archive
www.university.org.tgz it might be that inside you only find
http://www.university.org/~user/private/mac/.
Also i skip forums, blogs and other such content.
You remember what we talked about, the script that would everyone allow to make their own set of mirrors? I did some initial work and it seems to work fine so far. However, it's not finished yet

.