One thing I personally notice in almost all of these threads is that the conversations always go downhill really quickly - which naturally leads to reports, kicks and general bad feelings all around. Perhaps I'm just old fashioned, but when the very first comments have 'lol' (or 'meh' in that other example) appended or have someone start a conversation with a passive aggressive comment, of course people are going to escalate the discussion and turn it into a fight eventually. This is amplified a thousandfold when people are using a second language. The people who aren't native English speakers might sound harsher than intended, or they might mistake a joke for sarcasm (this goes both ways).

Part of this is simply cross-cultural differences - what sounds fine to a US player can sound insanely rude to a British player, and vice versa, even though both of them are fluent in English. I can definitely attest to this. Part is a potential age difference; teens who have been playing competitive games like LOL for years might have thicker skins than older FF devotees simply wanting to play a friendly MMO while the kids are asleep.

I basically disagree with everything else Tanathya said in this thread but in the example of her screenshot, the problem wasn't the tanking or the healing at all, it was the fact that the tank was verbally abusive right from the beginning. She then responded sarcastically as anyone would be tempted to, and this escalated things because the jerkish tank took it as an invitation to keep up the rudeness. The original poster's first complaint about their healer was sarcastic and confrontational - understandable under the circumstances, but unlikely to ever lead to an amicable resolution. When the healer took responsibility that should have been the end of it (it was admittedly made more complicated in that particular case by them apologising in French instead of using auto-translate). When you don't know the limitations of the communication skills of the other group members I think it's better to try a measured approach to begin with even if it's hard to have to be the adult.

In Japanese groups, when a non-Japanese-speaker is being an idiot the first attempt to reach out to them is always an overtly non-sarcastic helpful message, like "WHM, did you know that if you use Regen after the pull it will make things smoother? I'll use my cooldowns so don't worry too much about me at the start. Let's do our best!" and then if the target continues being stupid it will gradually escalate after giving them a few chances to screw up and learn from it. Of course kicks can still happen, and I'm sure plenty of Japanese players have been banging their heads against their desk in frustration while typing out their calm-sounding conversations using Google translate and scraps of half-remembered English. But I'm used to the more gentle approach and have never seen a party collapse into the furious name-slinging and personal insults I see every day on these forums. It's... nice.