Part of the reason that there is currently no Programming Forum is that NetStumbler and MiniStumbler are not open source and never will be. Marius, the author of the programs, is under several NDAs. See the
Sun 1 Feb 2004 entry at:
http://www.stumbler.net/index.php?cat=4 Marius does provide some links for people wishing to develop their own applications under the
Wed 16 Apr 2003 entry.
Other tools such as kismet and PocketWarrior have their own sites. Some of those sites discuss their programs development in detail and even have their own fora.
So we can't discuss the development of NS and MS, and other tools have their own sites. Based on that it would seem that a Programming Forum would not have much use, or would extend far beyond NetStumbler (which is after all, the whole reason for
these fora.)
If there some other need that such a forum might fill, put in your thoughts. Adding a new forum takes a fair amount of user support before the Admins will put it on.