I posted a blog entry of mine yesterday. (https://hackernews.hn/item?id=1295462) I had exhausted my research options so the post was me asking for help.
Less than twenty-four hours after submitting it to HN -- on a post that got no up-votes or comments -- I had several people contact me with suggestions, tangential ideas, and even a PDF copy of a presentation made three days ago that talked about EXACTLY what I was mentioning.
HN might have more noise these days, but the signal is still strong.
Thanks, HN.