While you were sleeping Walmart had the greatest sale/nastiest glitch ever before shutting down their site and canceling thousands of online orders. 55-inch Samsung flatscreens for $300 and $500 giftcards for $48? REALLY?! With nationwide protests by employees over low wages and a once-in-a-lifetime pricing error, Walmart is already having the WORST week ever. Here are the best Twitter reactions to Walmart's classic price glitch. Take a look.