According to data released by ComScore, Google has made an internet first with over 1 billion unique visitors from around the world in the month of May, up 8.4 percent from a year ago.
In May 2010 Google had 931 million unique visitors compared to May 2011 when it recorded a record of over 1 billion.
Staying in May, Microsoft came in a distant second with 905 million visitors. Facebook and Yahoo held the third and fourth positions with 714 million visitors and 689 million visitors in the month. Yahoo has trailed behind Facebook since last year but now it seems that Facebook will continue to outpace Yahoo month after month.
ComScore notes that not everything is about the number of visitors, as most of these companies make money on advertising. Internet advertisers care not only about the number of people who see their ads but also how long people stay looking at their ads. This is where Google and Microsoft don't have the advantage.
Facebook users recorded the most minutes spent on the website with over 250 billion minutes in May. Microsoft and Google came in with 204 billion and 200 billion minutes.
According to The Wall Street Journal ComScore receives its numbers based on a "global measurement panel" of over two million internet users. The firm then uses estimates with "page view" data received from 90 of the 100 publishers of web content. Google is not a part of the 90 ComScore receives data from.