But, a closer look found men like socializing, too. Even though guys spend fewer hours Facebooking than women, the XY gender still devotes more of its Internet time social networking than any other online activity, according to that same Comscore data. They might not be pinning wedding dresses on Pinterest or uploading photos on Facebook -- women do a lot more of that than men, found Harvard research -- but they're there. Where is there, you might ask? Using Quantcast data for Tumblr, Twitter and Facebook, information from Comscore for Pinterest, and stats provided to us by Reddit and Gentlemint, we put together this gender breakdown of the social Web. We understand that "third party stats are always needing of large grains of salt," as Reddit's Erik Martin told us. But, each of the social networks declined to provide us with their own data. Using the data we could get our hands on, this is where the men are at:

Based on our knowledge of the general feel of these sites, having spent many hours persuing them, as well as the demographic breakdown (see chart below), we've put together a guy's guide to sharing on the Interwebs. (Gentlemint, as a brand new site, did not have this type of data available.)

Tumblr
The Perfect Fit: Hip millennials
Why? Saturated with equal parts girl and boy and chock full of young people trying to prove their hipness, Tumblr is like the Brooklyn of the Internet. Note the ages cluster around 20-something range
What's there to do? Porn; Single Serving Sites; Comedy; News
Twitter
The Perfect Fit: Up and Coming [INSERT PROFESSIONAL TYPE]
Why? Twitter's about information gathering and distribution, but it's also about networking. There's even this thing called a Klout -- "The Standard for Influence" -- which apparently measures one's Twitter power. The established Jill Abramson's or Rupert Murdochs of the world are on there. But don't really have to worry about their behavior. (And neither of these names do, apparently, with Abramson tweeting almost nothing and Murdoch tweeting absurdities.) A rising star, however, can meet the right people and learn things about the world.
What's there to do? News, Punditry, Jokes
Pinterest
The Perfect Fit: Comfortable with Themselves Gen X-ers or Adventurous Internet Users
Why? Well, the Internet says that Pinterest is girly, which could scare away some fellas. And the demographics don't lie, there's a big female factor on there: 9 women for every 1 man. It takes a certain kind of man to enter such a lady heavy space. We've seen Internet heavy hitters like Mark Zuckerberg and Reddit's Alexis Ohanian, who are on there presumably to check out the competition.
What's there to do? Gadget porn, food porn, space porn
Gentlemint
The Perfect Fit: Dudes, bros, and gentlemen.
Why? The site calls itself "a mint of manly things" and The American Mustache Institute called it "one of the more manly websites on the planet." It also developed as an answer to girl-site Pinterest. "We see ourselves as more of a complement to Pinterest," founder Brian McKinney told Forbes' Alex Knapp. It's the type of place that attracts men who want to prove and protect their manlihood.