Okay, since you ask, the URL is
http://mimf.com/cgi-bin/webx.exe

It's a forum about the construction and repair of musical instruments. I take the link called "stringed instruments" from this page. I find it quite interesting, but many others may not. Also, remember I said interesting, not friendly. Mudcat is special, nothing else quite like it. But to be fair, the conversations on the other forum are cordial at least and the sysop makes sure there is no flaming, also that people stay on subject.

Another idea they have is when you post a message, you have about a half hour to edit it or even delete it.

Overall, I think the Mudcat format is superior - but it could always be better.