Facebook remained the leading social network by a wide margin, and females were 6 percentage points more likely than male internet users to have an account on the site. Google+, a social network which had been somewhat marginalized after a lackluster start, is proving itself in US user figures. The site had the second-highest number of account holders among both men and women, leading Twitter by approximately 10 percentage points for both genders. About one-quarter of male and female web users were on the site. On Pinterest, the skew toward women has been well-documented and remains firmly entrenched. More than one out of five female respondents had an account on the network, compared with 5% of men. About 6% of both men and women were on Instagram, with slightly more women on the site. On Twitter, penetration rates were also very close, at 17% of women vs. 15.5% of men. Get the full story at eMarketer