I'm not convinced that Facebook would be looking to buy BIG any time soon.
The smart play would be to let BIG mature as a business with all three pillars. Then Facebook don't have to build it out. The BIG team are killing it so why would you get in the way of that. Let them build the cash machine and then buy it off them and make the money back over time.
BIG Price at posting:
$4.58 Sentiment: Buy Disclosure: Held