If you haven't already you should look at the TrueType HOWTO. The most recent version of it can be found in HTML at http://pobox.com/~brion/linux/TrueType-HOWTO.html or in SGML format at http://pobox.com/~brion/linux/TrueType-HOWTO.sgml.
Updates of the ttfutils are available at http://pobox.com/~brion/linux/ttf.html.
Probably the most appropriate newsgroup is comp.os.linux.x since most Linux programs using TT fonts are X programs.
And last but not least you can contact the author of most of these programs at brion@pobox.com.