What do you propose BGH should do? Ban or edit the dissenters?
Dissenters from what? Hunting? The only controversy I've ever read is fenced versus public land or on making very long shots. Politics? Does BGH have a political stance? I've read the FAQ nothing there.
Kos is mainstream, one of the largest internet portals for politics. Take a look at their FAQs, most the good stuff is under "Trolls". The place most conservatives get hung up is in posting Republican talking points that are simply untrue, or in posting or replying to comments to get a reaction or arguement. Like claiming Obama is a Muslim or other nutty stuff. Likewise whole posts about Palin/babies/etc were deleated, too weird.
Just to give you an indication the number of pro hunting pro second amendment responses I've read there outnumber those here by about 50/1. There are rediculous lefty posts, but at over 100 posts per day they quickly get lost due to lack of response or recomendation. Obama has posted twice, hardly left win in general. I'd characterise Kos as a centrist Democrat Forum.
I read two other Forums on different subjects, more on them later, one thing all forums seem to have in common is that moderators don't take part in discussions.