Click! Black Friday shopping may have been lower than usual this year overall, but as of 6 p.m. Eastern time, overall sales were up 17.5 percent for Cyber Monday sales compared with last year, according to IBM Digital Analytics Benchmark. Amazon sales were up 44.3 percent over last year and eBay up 32.1 percent, according to ChannelAdvisor. And the numbers are growing. For Walmart.com, specifically, it could be its biggest Cyber Monday yet and Custora CEO says that "Cyber Monday is well on its way to being the biggest online shopping day in history."