Reggie, the Mudcat knowledge base is pretty vast but there can be gaps, even where you might not expect them - and on the other hand, find someone who can answer an obscure off topic question...

I don't know what else you have asked but I would almost certainly disagree with you over "worthy thread material". I certainly would have asked the question on the plectrum banjo in a thread on it's own - a thread titled "Help: Plectrum banjo" may just grab the attention of the right person, maybe a "passer by" but that person may not even open say a thread entitled "tenor banjo" to get to the question.

As for other banjo resources, as I mentioned before, there is the alt.banjo newsgroup. The majority of posters there are 5 string players but there are players of other types of banjo as well. The other banjo newsgroups I am aware of look to be more specialised - alt.banjo.clawhammer and alt.banjo.minstrel. If you haven't got a newsserver, you can use google's system.

Another banjo discussion group that I believe is good (I've not looked, I hate List servers) is the Banjo-L list. You can find it at http://zeppmusic.com/banjo/

Jon