It’s over. Facebook is now as large as MySpace in the U.S., according to May data released today by comScore. Facebook actually passed MySpace by a smidgeon, with 70.278 million unique visitors compared to MySpace’s 70.255 million. While Facebook passed MySpace on a worldwide basis last year, as recently as last March, Facebook was still trailing MySpace by 9 million unique visitors.

In May, Facebook gained another 2.8 million unique visitors in the U.S. MySpace, which has been stagnating lately and as a result now has a new CEO, lost about 700,000 unique visitors during the month. A few months ago, it looked like it might take Facebook until the end of the summer to catch up to MySpace, but it has already done so.