It’s your fault for not having a fault tolerant site that runs on another service provider. This is what happens when you put your eggs in one basket and that basket bursts into flames.

If reliability is so important, make it a priority instead of just expecting stuff to work or for a more politically correct error message — which leads me to my next point: who cares about the ERROR message? The damage has been done by that point and half the people won't bother to read any further. Queue sounds of people clicking back buttons as fast as they can.