Google -1 , Yahoo - 2 , Microsoft - 3 and Facebook as 6th most traffikked site in US

April Stats:

Google reached the pinnacle of the Top 50 U.S. Properties in April, with an audience of 141 million visitors, according to data from comScore's monthly analysis. In April, more people used Google's job search, career resources and television sites, according to comScore.

Yahoo sites ranked second, with 140.6 million visitors, followed by Microsoft Corp. sites with 121.2 million visitors.

"April was a very active month. Google took the top property position, thanks to continued search growth and rapid growth at YouTube," said Jack Flanagan, executive vice president of comScore Media Metrix, in a statement.