Facebook has a phenomenal amount of organized data about their customers, and a reasonable amount of unorganized data.
It's a data miner's heaven.
People leaving for potential higher pay, when it's a lot higher, is natural.
Also, working for a non-public company is often quite different than a public one. Facebook is private, so we really have no idea what it's like to work there, and they can do pretty much whatever they want with their money.
Also - engineers who can cop 3.5 million dollar raises just to stay somewhere aren't really concerned about job stability, yeah? They can find work easily.
It's a data miner's heaven.
People leaving for potential higher pay, when it's a lot higher, is natural. Also, working for a non-public company is often quite different than a public one. Facebook is private, so we really have no idea what it's like to work there, and they can do pretty much whatever they want with their money.
Also - engineers who can cop 3.5 million dollar raises just to stay somewhere aren't really concerned about job stability, yeah? They can find work easily.