New York: Following Facebook's $19 billion acquisition of WhatsApp, the two founders of the popular mobile messaging service have now earned a new distinction - a place in the Forbes's list of global billionaires.

According to Forbes, 38-year-old Jan Koum, who ranks 202 in the list, is now worth $6.8 billion and 42-year-old Brian Acton (rank 551) is worth $3 billion.