I have really just started looking at the Judo forum. Part of the reason is that I just started a grappling art a couple months ago. Also at the start of my BJJ training I always posted questions under the Martial Talk forum.
Reading past/archived posts, I have realized that there is alot of talent and knowledge on the judo forum that is largely untapped.
I rarely have anything intelligent to say, but I would love to contribute and make this particular forum flourish.
One caveat. Perhaps it could be identified as Judo/Jujitsu forum or Grappling forum. It might have a wider fan base.