comScore, has released a study of global Internet traffic for the month of May, revealing the latest worldwide rankings of top Web properties from the comScore World Metrix service.
There were 772 million people online worldwide in May (defined as those individuals age 15 or older who accessed the Internet from a home or work location), an increase from 766 million in April, representing a 16 percent penetration of the worldwide population of individuals age 15 or older.

Google continues to lead as the most popular property, reaching almost 70 percent of Internet users. Both Google and the second-leading property, Microsoft, increased their number of unique visitors by two percent from April to May. The top three properties each boasted more than 20 average visits per visitor in May: Google with 27, Microsoft with 23, and Yahoo! with 22.