FB is a great business model and they can monetize even more the 3 b + users for now for exemple you can buy and sell for free on FB so why not capitalising more on this
Plus I believe online payment is on its way
Plus I don't believe marketing spendings will collapse quite the opposite to bring back consumers
Anyway just my view so please take care and be nimble in those time
No need be wiped out , stay in the game for the long term.
Very difficult to precisely catch it at 163 all will depend of the concerted response of government and central bank this week
NVM 170 is good to start with