Facebook co-founders sign the Giving Pledge, promising to donate majority of their fortunes
Shoppers may be suffering from an online hangover after spending record amounts
Major vendors also expected to scoop up small social software vendors
Groupon reportedly rebuffs Google's acquisition bid, stirring up hornets' nest
It's not ET, but a new form of life found right here on Earth
9 million shoppers spend $1 billion online in a single day, many using their computers at work
Forget the economy and politics, searchers focus on Justin Bieber, Kim Kardashian
In Q&A, Microsoft's Tom Rizzo says Google doesn't understand business needs
U.S. authorities may quickly follow suit, analysts say
Online shoppers spend 9% more on Black Friday than in 2009, comScore reports
