Cyber Monday is the day after the long weekend, when those of us in the US get back to work. We point with pride to our reputation for productivity, but few of us can resist the call of high-speed Internet access at the office to goof off at least a little bit. On Cyber Monday, though, we productively focus our goofing off on online holiday shopping. Online retailers respond with a plethora of deals: free shipping, special prices, BOGOs, and the list goes on and on. Cyber Monday has gotten bigger and bigger every year. This year might be the biggest yet, if the numbers Greg Sterling collected …