Pinterest is now the number three most-popular social network in the U.S., behind Facebook and Twitter, according to Experian Hitwise.

A new report from the researcher shows Pinterest got 21.5 million visits during the week ending Jan. 28, a nearly 30-fold increase over a comparable week in July. Not surprisingly, the site skews female with a 60/40 ration of women to men visitors.

via Pinterest is Now the No. 3 Social Network in the U.S. [STUDY].