Some projects are documented on his homepage at http://bl0rg.net/~mgr or alternatively at http://team.vantronix.net/~mgr, and recently I started a weblog at http://blogs.bl0rg.net/mgr.
Max-Gerd Retzlaff
Max-Gerd Retzlaff is listed as a Person. You can contact him via <m.retzlaff@gmx.net> or <mgr@bl0rg.net>. (His GPG-key can be found at wwwkeys.de.pgp.net.)