FTP

Archiving a whole public FTP host/mirror is easy:

SketchCow> I use wget -r -l 0 -np -nc ftp://ftp.underscorporn.com

Now zip/tar it up and send to the spacious Internet Archive![1] (If you're short on space: tar --remove-files deletes the files shortly after adding them to the tar, not waiting for it to be complete, unlike zip -rm.)