Interestingly, Riot games is constantly working towards a solution of this problem, as it is most common in their popular title League Of Legends. There are countless unwritten user-generated rules that are common for online titles that may be perceived as socially inapt by new players (e.g. insulting). If you're interested, i'd have a peek on google scholar for some academic research into the subject; there's countless things!
https://scholar.google.co.uk/scholar?hl=en&as_sdt=0%2C5&q=league+of+legends+trolling&btnG=
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#Steam AliasWL%Streak
- 1.47770.872+1
- 2.246100.711+3
- 3.413215.658+2
- 4.414291.587+2
- 5.1317731.643+8
- 6.376196.657+1
- 7.21458.787+2
- 8.351138.718+2
- 9.335121.735+3
- 10.517333.608+5

cblanco ★
보드카 중대
VonManteuffel
Heartless Jäger