So says a new infographic courtesy of Imbue Marketing, which combed the Net to breakdown the user profiles, their likes and habits of the biggest social networks today including YouTube, Pinterest, Instagram, Facebook, Twitter, LinkedIn, Foursquare and Google +.

At the Web 2.0 Summit in San Francisco yesterday, famed digital analyst Mark Meeker gave her annual “Internet Trends” address that touched on everything from Greek debt to a long-overdue re-casting of Abraham Maslow’s hierarchy of needs putting our digital/mobile needs over self-actualization. Here’s the presentation in full:

In Japan, Twitter is on the verge of knocking off the incumbent Mixi as the country’s top social networking platform. Meanwhile, Facebook’s popularity there is stagnant at best.

It’s no surprise that Asia is one of the biggest growth markets in social networking. So you might think that’s where Facebook is gaining its new ground, right? Well, actually no. In much of Asia, and some other parts of the world, Facebook is trailing badly in the social network stakes.

That’s the conclusion of the latest comScore study which finds that women spend far more time than men online connecting with their social network of friends and acquaintances. Perhaps that’s not surprising until you consider that women, on average, spend roughly 90 minutes more per month on social networks than men. That amounts to 5.5 hours/month for women on the likes of Facebook, Twitter and YouTube compared to about 4 hours for men.

Can social media spring-cleaning be a good thing? Coca-Cola in the UK, it is reported, is slashing the number of official websites for its brands in order to streamline consumers’ social media experience. This raises the questions: Can too much online presence for a brand make for a clunky and confusing user experience? And, is it ever okay for a brand to decide where its fans should hang out online?

We may very well look back on yesterday’s Facebook privacy climb-down as a turning point in the very nature and function of social networks. Bowing to public pressure, the social networking heavyweight will introduce in the coming days new privacy guidelines that could very well lead to a whole lot less sharing of our private photos, videos, status updates and favorite links. And yet for such a landmark policy change, nobody seems to be happy with the changes.

We’re pretty sure that Twitter has transformed before our very eyes over the last 12 months. Way back in, oh, May 2009 we followed a smallish group of friends, contacts and people whose opinions we respected so that we could enjoy a slice of their life and thoughts as expressed in nice 140 character digestible bites.

Come earnings season, executives will turn to any rosy metric they can find in the financial statement to placate restless investors, particularly during an economic downturn like the one we’re in. All kinds of calculations …

Every day, quick bursts of highly targeted medical information are pumped into the Twitterverse, oblivious to most of us goof-offs blithely in search of the latest iPad reviews and Justin Bieber gossip.