

I think they mean not letting the ideas go unchallenged. If someone is reading through and sees a bunch of Nazis posting hate all up somewhere with no one else saying anything, they might assume that sort of behavior is just tacitly accepted and influence their perception of the community as a whole.
Well first you ask, and then later you give a completely unrelated donation. After all, buying favor would be illegal, this is just free speech, which is fine as long as you don’t talk about Palestine.