It seems like the FB founder has nothing but positive things to say about blockchain technology.
There are rumours going around that he will release a cryptocurrency for use on WhatsApp, but given the privacy and censorship concerns over FB, I can't see many people going for it.
Well, its kinda bad if Mark Zuckerberg will going to bash cryptocurrency as its technology, the blockchain. He needs support and I guess he might as well utilize it in his apps I just don't think if it might be WhatsApp.