"nice post" is not a useful comment. "salary too low" is not useful. "lol php" is not useful. "what a dumb business model" is actually harmful. "ceo used to

"nice post" is not a useful comment. "salary too low" is not useful. "lol php" is not useful. "what a dumb business model" is actually harmful. "ceo used to work for rocket internet, what a fucking hypocrite" may be useful, but too many of these would reward personal attacks. I can't really think of many useful comments.