World of Warcraft. While yes, it does turn some people into obsessed losers that spend day in and day out in front of the computer; those people were douches anyway, and if Warcraft didn't do this to them, something else would. probably porn.
lol n00b I pwn you shutup n00b lolol.(Most people, WoW players or not, cringe at the sight of this sentence, it makes English speakers want to cry.)