Does WhatsApp deal show Zuckerberg knows what's up?

Facebook buying messaging app WhatsApp for $19 billion

WASHINGTON -- Billionaire eco-entrepreneur Elon Musk announced on Friday that he was quitting Facebook founder Mark Zuckerberg's immigration advocacy group, upset over its controversial political strategy.

Fwd.us told The Huffington Post that a second funder also had decided to withdraw. Several media outlets have reported that David Sacks, founder of the business networking site Yammer and a former colleague of Musk's, had dropped off the list of the group's supporters.