Google set a staggering record in May, according to new comScore data: It reeled in more than 1 billion unique visitors, marking the first time an Internet company can claim that honor, reports the Wall Street Journal. The figure represents an 8.4% rise over the past year, and it's more than double the 496 million unique visitors Google had per month in early 2006, when comScore started measuring Web traffic. Microsoft was the No. 2 company in May with 905 million unique visitors, followed by Facebook (714 million) and Yahoo (689 million).
However, Facebook continues to be the market leader in time spent by users, racking up a total of 250 billion minutes in May—up 66.6% from the same time last year—beating Microsoft's 204 billion minutes and Google's 200 billion. (Read more Google stories.)