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
- 1.630365.633+9
- 2.492236.676+3
- 3.935247.791+1
- 4.1529819.651+1
- 5.1301453.742+5
- 6.271106.719+1
- 7.729432.628+1
- 8.14232.816+1
- 9.26069.790+4
- 10.379128.748+1

cblanco ★
보드카 중대
VonManteuffel
Heartless Jäger