If it's to continue growing as fast as it has so far, Facebook needs to find more ways to keep people engaged in its services.
from Forbes.com: Most popular stories http://www.forbes.com/sites/roberthof/2015/01/29/the-one-missing-ingredient-in-facebooks-drive-for-tv-ad-dollars/
from Forbes.com: Most popular stories http://www.forbes.com/sites/roberthof/2015/01/29/the-one-missing-ingredient-in-facebooks-drive-for-tv-ad-dollars/
