Why does no one take advantage of it? I can only speak for myself and say that I might take advantage of the current "Creativity and Ideas" section at some point, but my suggestion was for something more structured, more "curated". Which I would definitely be interested in. Why do people keep things so secret? Who knows, keeping your projects secret is an antiquated idea. Opening up your process, engaging in dialogue, viewing your potential audience as "co-creators" of the final work is the way forward.
Like I said in an earlier post my background is in theatre. We struggle with similar questions. Here's a link to a current project. It's titled Awkward Conversation, and it's a conversation about this very topic with our local audience in Brisbane, Australia. http://www.pozible.com/project/181384
In any case Andrew Reid has positioned his website in a unique position. It's much more than what Phillip Bloom offers and it's not a free for all (as much as I read it) like No Film School.
Also, as a response to Blanche's original post, I suspect it's got many people making stuff. My suggestion was not for a general discussion on random subjects, but for those projects inspired and motivated by what they have learnt on eos hd to actively engage with the websites readers in a structured and meaningful way.