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These aren’t little kids that need to be taught manners. If I see profanity, I delete it, just as Pavel suggested. It’s difficult to keep track of everything, but no one is stopping anyone from writing a private message if someone is offended. Although, in this section, people are already used to this kind of communication, and no one gets offended. As for trolling, it’s a very subjective concept and depends entirely on the people involved. If a person is sensitive and has a negative attitude, they will notice it everywhere. Any joke can become trolling if you want it to.