My friend Bob Terry (5d), "doesn't do networks", but does do a lot for Go. Among other things, he translates Go material which appears in books, magazine articles, and games on disk. ; He also regularly publishes his own Go 'zine, theAmerican Go Extra. Most of Bob's recent efforts are available from Yutopian Enterprises, though you won't find his name on most of them.
Here is some additional material from him, intended for higher ranked players.
to view it you need "Nemesis" a venerable program which Bob uses to computerize his game commentaries. Free demo versions are available for Macintosh, Dos, and Windows.
You can use the free URL MINDER service to automatically notify you when this page (or any page on the web!) is updated. Very handy - saves all that boring checking in, only to discover that nothing is new.