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
- 1.796136.854+2
- 2.46468.872-1
- 3.871298.745+2
- 4.14465.689-1
- 5.401212.654+3
- 6.21156.790-2
- 7.301128.702+3
- 8.354186.656+3
- 9.501325.607+4
- 10.327118.735-1

cblanco ★
보드카 중대
VonManteuffel
Heartless Jäger