Grubhub, Seamless online food delivery services go down across USA

So apparently the online restaurant delivery services Grubhub and Seamless are down across the USA with many reports from Twitter of customers being charged for food,  and then the orders never being forwarded from Grubhub to the restaurants.  Leaving many restaurants who participate in Grubhub and Seamless at the mercy of many angry customers who haven't received their food despite having paid for them.

No word from Grubhub yet about what happened, but from twitter,  I can guess they are going to be giving out a LOT of refunds tomorrow.   At this point,  wouldn't the prudent thing be to shut down the ordering system entirely for the rest of the night?  Just a thought.