Posted intechnology News
'Emotional blackmail': How Duolingo manipulates its 31 million users – Business Insider
'Emotional blackmail': How Duolingo manipulates its 31 million users Business Insider #039Emotional #blackmail039 #Duolingo #manipulates #million #users #Business #Insider, #039Emotional #blackmail039 #Duolingo #manipulates #million #users #Business #Insider