foxnews.comは安全ですか？

yes and then you can wander over the daily kos, the huffington post, and even the new york times and find the identical post with the only exception that "LIBERALS" is replaced by conservative. so the point of your observation is that people will write stuff on websites, and that they might not use appropriate filters for those comments. so unless we are going to hold every site accountable for what non-affiliated people will post as comments, i don't think that user comments should factor into a rating of a website.