On Christmas Eve and Christmas Day, Facebook was the No. 1 most-visited website in the U.S. for the first time. Everyone will have their own bubble-specific anecdotal reasoning for this, but we think it’s because that tradition of strangers (or near-strangers) saying “Happy Birthday!” on the Facebook walls of birthday boys and girls has finally made its way to a major holiday. Basically, Facebook is the new Christmas Card. [HuffPo]
