Yeah. I joined the private beta, tried a couple things, and almost immediately backed off. Part of it was the inability to organize; the other part was a UI I found quite unintuitive, though I gather they've changed some things about it since then. That there was no way to outline a progression of examples that *collectively* illustrated a concept, and that all examples that anybody attached to a concept ended up in a hodge-podge together, made it hard to do do anything productive.

I share your frustration with many FAQs. Too many entries have never been asked by anybody anywhere...