Sorry, but welcome to technology. Gmail has been sporadic for me. Firefox crashes periodically on this machine, but not my box at home. I've bought games that I can NEVER get to work on any computer. When I plug in my iPhone via USB, Photoshop opens. Back when I actually worked at a big company, the Exchange server acted up from time to time. Google Analytics just admitted to losing some data, but they think they can recover it. Amazon was down for a big swath of time recently.

Yahoo being down for a single morning is not news, and should not come as a surprise- serving up email at that volume is complex. It being down frequently is another story. Is it?

I'm sure if you ever spin up a startup, your first technology catastrophe and resultant unscheduled downtime will cure you of your desire to see an angry mob when stuff like this happens.