Part of my local NextDoor after I got a card in the mail.

Lots of "Where was that police car that went down my street headed?", "Escaped Animal", "Flea Market swap", "Promoting my home researched Christian eschatology book published on vanity press".

Occastionally there's useful information like City Council issues, major road closures, etc. But As others have said a lot of NIMBYs, armchair patriots, and thinly disguised racisim.