An interesting piece on the Facebook Developer Platform. The money quote is pretty clear:
The short truth is this: Facebook doesn't care if developers can use the platform easily or at all.
Which lies at the heart of why you need something like the Viafo Gateway sitting between you and the different social networks (and other services) making it easy for you to integrate, use and keep track of the performance so they don't become a critical problem for your app or service.
Sign up for a free trial account today at http://dev.viafo.com