re: #1 Charles Johnson
After the 2016 election Tumblr sent messages to everyone who had liked or reblogged something from a Russian troll. I know some of them are really obvious and clumsy, but some of these were surprisingly tricky. One I remember attacked Hillary in the guise of being a Bernie supporter. The troll was on her case for not caring about student loan debt. That is actually carefully calibrated for the Tumblr crowd.