Google: 1 billion served, monthly.
Google has reached an unprecedented milestone as the world’s first Internet company to claim over 1 billion unique users in a single month on its websites.
According to data from comScore, during the month of May, Google-owned websites, including its search engine, email service Gmail, and video-sharing site YouTube, among others, notched more than a billion unique visitors, an 8.4 percent increase over the previous year.