This year's Cyber Monday is predicted to be the biggest online shopping day in US history.<br />Business Insider reports Cyber Monday is expected to generate $7.8 billion in sales.<br />According to Adobe Analytics that figure is up nearly 18% on last year.<br />This comes even as holiday shopping becomes more spread out.<br />Consumers increasingly start buying online on Black Friday and even Thanksgiving itself.<br />Retailers are offering huge deals to keep Cyber Monday strong in this changing environment. <br />