7 Deadly Sins of Online Gaming

Important rules when online gaming, summed up by me in 4 words:
Don’t be a douche.
The 7 Deadly Sins of Online Gaming | Cracked.com

#4. Level Abuse (Gluttony)
And for a while, everything’s fine…
That is, until a level 70 Warlock descends from the heavens upon a magnificent winged beast and slays you and your entire party with a wave of his hand.
As he loots your bodies and tosses your precious items into a gully, you demand an answer from beyond the grave. “What the fuck, dude?!”