"friendly comment" is correct and can be used in written English.
It is used to describe an opinion or remark that is presented with a positive or helpful attitude. For example: "I'd like to make a friendly comment here - I think this project is going to be a huge success!".
And beyond just the monetary help it has provided to refugees and efforts fighting neo-Nazism in Germany, a friendly comment is issued in response to each hateful one, thanking each commenter personally for their donation to the cause.
Or just another friendly comment?
After much meandering, Cain said that the accusations were false, and that one of the women had reacted bizarrely to a friendly comment about her height.
Bleak too was the reception he gave to his fan Karl Miller, who met him once and made some would-be friendly comment on an account of a 19th-century MacLeod he had been reading, only to be told that there were lots of MacLeods in the world.
They also recommend instructing young men, before they are granted drivers' licenses, that "Darwinian selection" is the reason a man "may be tempted to demand sex even if he knows that his date truly doesn't want it" or "may mistake a woman's friendly comment or tight blouse as an invitation to sex".
While some might perceive "fat" as a confusing comment for the duchess, the woman's tone of voice and Markle's cheerful response made it clear it was meant as a kind, friendly comment.
Passersby stopped in amazement, offering friendly comments: "The sky is wrong," "The bread is wrong," and so on.
I shall greatly miss him and the pithy but friendly comments that always accompanied the clues he submitted.
And while no one is predicting that Mr. Giuliani's mood will last, he himself addressed the change after his diagnosis in one of his increasingly reflective, and friendly, comments to reporters last week.
Pete McGushin has had enough and he's not going to take any more: "Just a few words to counter the well reasoned and friendly comments of your USA readers," he writes.
The article cited last week's market friendly comments delivered by Fed Chairman Alan Greenspan as reason to believe that the Fed is adopting a less aggressive position.
