For questions and discussion about NetHack itself, try the USENET newsgroup rec.games.roguelike.nethack.
If you have a question about the Falcon's Eye interface, you might want to read the list of Frequently Asked Questions.
Some answers about the game and the interface can be found in the game manual, which comes with the game.
Also, there is now a new message forum at ezboard where you can discuss Falcon's Eye.
If you think you have found a bug in Falcon's Eye, send me e-mail about it to jaakko (dot) peltonen (at) hut (dot) fi.