There are tons of things you can buy for $16 billion. So what if Facebook decided not to buy WhatsApp and instead something else?
Sixty Four Washington Posts
Jeff Bezos bought the Washington Post newspaper in August of last year and he paid $250 million.
Five And a Half Motorolas
Google let Lenovo take Motorola Mobility for $2.91 billion just last month.
Sixty-Four Thousand Virgin Galactic Flights to SpaceBetter
1,194,029 Indian Tigers
(Nearly) A Year of NASA
NASA's budget is $17.6 billion for fiscal year 2014
30 Jobstreets
Assuming it is valued at $524 million.