Facebook has passed News Corp.'s MySpace domestically in traffic, according to online metrics firm comScore.

In May, Facebook logged 70.29 million U.S. visitors, slightly higher than MySpace, which had 70.24 million uniques.

In April, MySpace was ahead of Facebook with about 3.5 million visitors, but Facebook's surging popularity moved quickly to close the gap with MySpace in the U.S.

To place that into comparison, MySpace was leading a year ago in May with 73.7 million unique visitors, compared to the 35.6 million U.S. users who visited Facebook.

However, internationally, Facebook has rocketed past MySpace in global traffic last August. In April, the most recent month that comScore's international data is available, Facebook enjoyed 307.1 million visitors worldwide, compared to the 123.3 million who visited MySpace.

In May of 2008, MySpace enjoyed a substantial domestic lead, with 73.7 million unique visitors, compared to the 35.6 million Americans who visited Facebook.

Meanwhile, Twitter was also doing well in third place with a growth rate of 2,700 percent in May with 17.6 million users.

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