I use it sometimes to message ex colleagues e.g. I'm traveling to City X and I want to arrange a coffee with them but I don't have their email or phone number anymore.

I see some people sharing info I care to reshare (we're hiring X/I'm looking for job X) and a ton of the same slop ("I went to pick up my kids. I realize this is the real breakthrough of agentic development. Let me explain.").

I genuinely can't understand why people write that crap, and who is their target audience.