It seems like the "white people do this, black people do this" shtick is practically gone, so why do we keep revisiting the "men do this, women do this" one?
I might as well throw around some broad generalizations based only on personal experience, myself.
Men generally have far more friends than women, and all the friends are far closer and more likely to confide in each other. "Confide" implying 1) That it is somewhat emotional rather than purely gossip-based. 2)that the information being confided is not shared with every other person of either gender that can be called a friend. "friend" in the use at the beginning of this paragraph including people that are actually emotionally close rather than people who are just there and are not particularly well-liked the majority of the time.
See how ridiculous it sounds when you think of the way you personally see the people around you as absolutes describing all people? Yeah, in the article he consulted someone who sounds like an expert on the subject. Quick question: how many people in this thread would trust the opinions of a random person you know absolutely nothing about other than that he describes his job as "relationship consultant"? Anyone?
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edit: and if you're wondering about me I will pour my heart out to friends of either gender, provided I can trust them and believe they will actually care. If they don't fit into both of those categories, I use the term "acquaintance" or "that jackoff" instead of "friend". That's the reason I can usually count the number of friends I have on one hand. But at least I know that the friends I do have are true to the end.