I find it odd that participation by low brass players is as light as it is on the various community sites.
High school and college kids LIVE on the internet. If they are half as passionate about their art as I was at that age, you'd think they'd be bursting these forums' seams.
Add to that military band members (also, primarily, young kids with an affection for all things online), and there is a HUGE potential membership. (not even taking into account music eduation and professionals)
Are these demographics simply not being properly marketed to?