The moment they started broadcasting any comment I made on any news story to everybody in my network was when it stopped being useful for me. It's one thing for it to be discoverable if people looked, it's another thing to feature every thought I have prominently in the feed of every person I'm connected to. This was probably a decade ago, and I haven't used it much since then.

That creeps me out, and probably everyone who realizes it. But, and it's not a tongue in cheek question, why not try to use it to your advantage ?