Pretty interesting, Facebook generally does not have a reputation for 'jumping on the bandwagon' so I assume they have thought this through. Many of their whatsapp users live in very poor areas that are not traditionally served by banks. If they integrate a wallet into the app it may allow for a real use case. They would still need to provide some sort of 'convert to fiat' functionality for those same unbanked users…
> Many of their whatsapp users live in very poor areas that are not traditionally served by banks. Bingo. Remittances are still expensive. Basic bank accounts are still out of reach for many. Any user with cash could become a convert-to-fiat provider. Before Western Union had to signup shops, now you can go through your friend lists to find someone you already know and trust.
Even with large & relatively liquidity cryptocurrency the spread to covert to local currency is large.
Right now if I want to get rid of a Bitcoin and get Vietnamese Dong I see rates from 89,286,016.80 to 90,135,312.89. The actual price according to Google is 93,851,364.64. So you're losing 4%, which is already comparable to a traditional remittance (the World Bank says 5% is the average cost for educated users).
Except this new cryptocurrency would be less popular and less liquid than Bitcoin, so the spreads would be higher.