Facebook didn't lose any money they need for day-to-day operations. The company lost value in the eyes of its shareholders, that's all. Facebook doesn't need to fill any void, as there is none.

No, this has been going on for awhile now, especially when you look at the high profile defections of many of the original WhatsApp executives.

The shareholders can't do anything because they don't have the voting power to effect any meaningful change. It's still Zuckerberg's company and will continue to be until they amends its articles/charter.

Why does a 20% decline in one day of trading matter after such a bull run-up since IPO ? Its just a tiny warning.

Maybe its my warped understanding of how multi-billion dollar boardrooms are ran.

To me, its not necessarily how well are our projects doing. Its more, squeeze out the most we can get from every asset and then squeeze for more.

I understand that Facebook will run just fine with or without the 20%, but I can imagine hearing this news and then looking around the room to find what acquisitions haven't performed well. Almost like a "What have you done for me lately?" vibe. Yes, its a bit warped to think that way (but fun too).