+1 - also an HN discussion auto-up/down-voter.
What's useful about that?
Personally, I've been struggling with the question of, are mega-services like Google and Facebook compatible with an open Internet? This helps to clarify my thinking.
Up to now I've been thinking about what evil they might do individually. Now I see the obvious: just like in any other industry, the objective is to reduce the market to a few major players (3-7). Then these become the only companies who can get "copyright clearances" or "non-fake news certification" in exchange for supporting their patrons' programs.