To me this doesn't make any sense, since groomed-track (non-backcountry) xc skiing doesn't have much to do with downhill telemarking -- and it's definitely "off-topic" on TelemarkTalk.
What can we copy from a more successful model?
One suggestion: TelemarkTalk has way fewer sub-forums than XCskiforum. It has proven that people don't need a special forum about Wax in order to talk about waxing. Too many sub-forums for the same basic group of people just dissipates energy -- too many different pages for me to check.
Therefore . . .
how about let's get rid of all these sub-forums which get only few posts . . .
like "Groomers" . . .
like the regional Trail forums: TelemarkTalk does just fine with regional discussions in the main forum, where they serve to build energy -- maybe it's worth looking at how that's handled on TelemarkTalk.
- One thing to keep in a separate forum: Races + Racing. Otherwise the racer-perspective will drive out all the other energy. (That was what the Usenet bicycling groups got right, and what the Usenet skiing groups didn't.)