The number of unique visitors to Google's sites rose 8.4 percent from 931 million a year ago to just over one billion - 1, 009.699 million to be exact.
Worldwide, the market researcher ComScore said yesterday, Google had its highest number in India and South Africa, which accounted for 14.3 percent and 13.5 percent of visitors respectively. The lowest figures were in South Korea and China, which accounted for 0.7 percent and 0.8 percent of total visitors from around the world, respectively.
Microsoft took the No. 2 spot with 905 million visitors last month, 15 percent from the previous year, according to ComScore. Facebook ranked third with 714 million visitors, up 30 percent from a year ago. Yahoo came in fourth with 689 million visitors, an increase of 10.8 percent over the previous year. Until last October, Yahoo had held third place, but since then Facebook has surpassed every month with the highest number of visitors.
Although Google captured the majority of visitors last month, users collectively spent more time on Facebook - 250 million minutes in May, compared to 200 billion minutes on Google and $ 204 million to Microsoft.