OK fine. I’m not even on facebook, I hate that “be BFFs with strangers” shit.
Having read the threads linked above, I now see the light. “Like” button a very bad idea.
The only utility I was thinking of was a quick off-board way to thank someone rather than posting a “hey thanks” post that everyone will ignore anyhow, or tht looks like you’re bumping your own post for shits and giggles.
Apparently I am naive.