Though you’re free to opt out, the knowledge that what you say may be seen by the people you know is a big deterrent to trollish behavior.
尽管你的退出很容易，但是你的评论会被你知道的人看到，这对那些攻讦的行为是个震慑。
2
These are the trollish comments, all from anonymous sources, that you could have found after reading a CNN article on the rescue of the Chilean miners.