Additions to the site are posted to the newsgroup rec.games.chess.misc, and these posts are kept in the directory Newstuff.
If you are using a browser that has a find feature, you can load the file allindex.txt (300KB), or download the compressed file allindex.zip (100KB), and search for a particular keyword.
The ftp site is located at ftp.pitt.edu, in the group/student-activities/chess directory. Feel free to contribute to the site! Place all uploads in the Uploads directory.