I'm quite active there, as is 5ittingduck. However, I would say nearly half the posts are people wondering why their quick mozzarella didn't work ;-) There are one or two commercial cheese makers in that subreddit and I've gotten some good advice occasionally. However, I would say that the experience level on average is quite low. Most people are posting questions because they have just started making cheese. Lately I've been reading /r/Cheese and I'm enjoying that to a certain extent. About half the posts are meaningless memes, but the other half are people posting pictures of cheese -- often cheeses I've never heard of before. I've found it's been great inspiration. Still, I enjoy both subreddits. The atmosphere is quite friendly (un-reddit like ;-) ) and people are pretty nice.