Why might someone lose their cool when chatting online?

In its interactive quiz, Ubisoft identifies five main reasons why someone might get frustrated when playing a game: miscommunication, failure, perception of unfairness, mood issues, and provocation.

Games and social platforms are different, so some of these causes won’t apply to your experience here on Just About (although bounties are a type of game, particularly the mystery bounty, so perhaps there’s more relevance than you might first think).

What do you think might cause a member (of Just About, for example) to lose their cool, and how can we help avoid that?