Facebook and Pinterest may be all of the rage. But a social networking site of another era is having a bit of a resurgence, at least according to a report out today. ComScore reports that MySpace is now the 42nd most visited Web site in the U.S. with 25.4 million unique visitors.

Myspace ranked 50th in January with visitors of 25.1 million. In November, it didn’t even make the top 50 list.

Now, granted, that’s a far cry from Facebook which last month recorded 158 million visitors to claim the title of the fourth most visited site. Nonetheless, the placement of MySpace — just ahead of IRS.gov and Yellowbook Network is worth noting.

Google remained the top dog in the comScore rankings, claiming 186.5 million unique visitors, followed by Microsoft’s tally of 174.4 million.

Some of the big gainers during the month were Pinterest, which saw its traffic base grow 52 percent on a month-to-month basis to 17.8 million uniques, and Healthline, which increased 97 percent to 12 million visitors.

Here’s a look at the top 50 properties in the U.S.

And here’s a look at the top gaining properties for the month.