For many years, some World of Warcraft guilds have participated in a controversial practice called raid boosting–selling their mastery of difficult endgame content to solo players in exchange for in-game currency. Mike Ybarra, newly-appointed Blizzard co-lead, recently tweeted an advertisement that he would be streaming his guild carrying a player they were boosting through Heroic Sanctum of Domination, an endgame raid, reigniting a new storm of debate within the community.